Lo-Chlor Algaecide 500ml
£17.00
Lo-Chlor Algaecide 500ml
Genuine Lo-Chlor product
Lo-Chlor Algaecide is a long-life algaecide which will prevent algae growth for up to 6 months. An ideal treatment to use when opening your swimming pool at the start of season and for both summer and winter maintenance. 1 Litre treats up to 26,400 gallons of pool water.

Lo-Chlor Algaecide 500ml
£17.00Request a Call Back
- Delivery & Return
Returns
Should you require any further information, please email accleisure@aol.com where we will respond to your request quickly.
At our discretion, we may accept goods returned to use unwanted outside of the 14 days, but no more than 28 days from the date of purchase, but these goods will be subject to a 50% – 75% restocking charge, subject to the condition of the returned goods.
On cancellation, you must return the goods to us at your cost, the goods should ideally be returned in original condition unused with the original packing or suitable packaging to avoid the goods being damaged on their return journey. If the goods are being returned because they are faulty, incorrect goods or because of unsuitable substitution by us, in which case we will meet the cost of return but we ask that you allow us to nominate the carrier, and all warranty decisions will be issued by the manufacturer/UK importer, before any warranty refunds can be validated & processed
If you have notified us of a problem with the goods, we will (at your option) either make good any shortage or non-delivery; replace or repair any goods that are damaged or defective upon delivery; or refund to you the amount paid by you for the goods in question. We will not be liable to you for any loss of profits, administrative inconvenience, disappointment, indirect or consequential loss or damage arising out of any problem in relation to the goods and we shall have no liability to pay any money to you by way of compensation other than any refund we make under these conditions. This does not affect your statutory rights as a consumer, nor is it intended to exclude our liability to you for fraudulent misrepresentation or for death or personal injury resulting from our negligence.
If you instruct us to leave your goods without a signature, i.e. an unattended delivery, the responsibility falls on you to ensure a safe delivery site. We will not be held responsible for lost items if your delivery instructions have been passed to our carrier. For all above ground pools especially wooden pools, we require that you ensure an able bodied person meet and assist with the delivery.
All dimensions displayed for each product are meant as a guide only, and if you require exact measurements, please contact us via post, telephone, fax or email. Above ground pools, in particular splasher/quick up pools can vary slightly in size to that shown, as these sizes are meant as a general overall guide to the size of the pool. Water depths can vary; depending on the level you fill the pool. Diving is strictly prohibited in above ground pools. All pumps & electrical heating devices should always be switched off when using Above Ground Pools to remove the risk of electric shock. All Pumps & electric heaters should be located at least 2 metres away from the waters edge, or be secured in a locked, waterproof enclosure.
- Ask a Question

Lo-Chlor Algaecide 500ml
£17.00Ask a Question
Lo-Chlor Algaecide is a long-life algaecide which will prevent algae growth for up to 6 months. An ideal treatment to use when opening your swimming pool at the start of season and for both summer and winter maintenance. 1 Litre treats up to 26,400 gallons of pool water.
General instructions
If there is algae already present, this should be treated prior to applying Lo-Chlor Algaecide by shock dosing the pool with either a shock chlorine or non-chlorine shock product then running the filtration for 24 hours.
- Ensure no bathers are using the pool before application.
- The pH level should be in the 7.0-7.2 range, adjust if necessary.
- Thoroughly clean the pool by brushing the walls and floor, vacuum the pool and filter as normal.
- Using the below dosage table, add the required dose to water in a clean plastic bucket. With your circulation running, evenly distribute around the perimeter of the pool.
- Circulation of the pool water should be continued for 24 hours, ensuring no other chemicals are added during this period.
- Adjust the pH to within 7.2-7.6 if not in this range already.
- After 1 full turnover of the pool water (typically 4-5 hours) bathing can be resumed.
Notes:
- After using Lo-Chlor Algaecide it is recommended to use Lo-Chlor Starver phosphate remover. This will prevent the re-occurrence of algae, and assist in helping the efficiency of other chemicals in your pool.
- Copper in water will reduce the activity of chlorine and bromine – check levels 24 hours following application and adjust to recommended range if necessary.
Dosage Rates
| Pool Volume (Litres) | Dose Rate – Prevention | Dose Rate – If Algae Is Present |
| 30,000 | 250 ml | 500 ml |
| 60,000 | 500 ml | 1,000 ml |
| 120,000 | 1,000 ml | 2,000 ml |
All products we sell are high quality and come from trusted manufacturers. The majority of our products are ready to be posted and in stock. Our webstore offers a vast selection of high-quality products, including pumps, filters, heaters, maintenance equipment, spares and much more. We carefully select only the best products to ensure that you have access to the highest quality items on the market. This is our family-run webstore, with over 75 years of combined experience. We are dedicated to providing you with the best products and services in the swimming pool and hot tub industry. We pride ourselves on our extensive knowledge and expertise, and we’re always happy to share it with our customers. Thank you for choosing our webstore as your go-to source for all swimming pool and hot tub needs. We look forward to helping you maintain your pool or hot tub for years to come!
If you have any questions about parts or knowledge, please contact us.
Any trade customers we can sort out discounts and can sell at trade prices.
Related Products
Premium grade Lo-Chlor Algaecide 1L
Premium Grade 1 Litre Lo-Chlor Algaecide offers long-lasting protection against algae growth for up to six months. Ideal for seasonal pool opening and winter maintenance, this high-performance algaecide treats up to 26,400 gallons (120,000 litres) of pool water. Trusted by professionals, it ensures clear, algae-free water all year round. A premium grade solution from a brand with over 75 years of experience.
6 in stock
Genuine ACTI 10KG Chlorine Tablets 200g
Genuine ACTI 10KG Chlorine Tablets 200g provide a reliable and efficient solution for maintaining clean and safe swimming pool water. These stabilised chlorine tablets dissolve gradually over 3.5 days, ensuring consistent disinfection while effectively controlling bacteria and algae.
Key Benefits:
- High Chlorine Concentration: Delivers powerful disinfection to keep water safe and clear.
- Slow Dissolution: Gradually releases chlorine, maintaining optimal levels for an extended period.
- Easy to Use: Suitable for skimmer baskets, floating dispensers, and chlorine feeders.
- Promotes Water Safety: Helps achieve ideal chlorine levels of 1-3 mg/l (ppm) for a healthy swimming environment.
Application Instructions:
- Place one tablet in the skimmer basket for every 45,450 liters (10,000 gallons) of water.
- Adjust based on water flow and ensure proper pH levels (7.2 – 7.6) for maximum effectiveness.
Ensure your pool water remains crystal clear and safe for enjoyment with Genuine ACTI 10KG Chlorine Tablets!
Out of stock
Premium HTH 1KG Shock Chlorine Granules
Achieve rapid pool sanitisation with Premium Grade HTH 1KG Shock Chlorine Granules, designed for a quick, temporary boost in chlorine levels. These fast-dissolving granules effectively kill bacteria and control algae, ensuring your pool remains clean and clear for a short period. Ideal for addressing immediate water quality issues, they provide a powerful shock treatment but do not offer long-term chlorine control. Perfect for quick fixes between regular maintenance.
-
Fast-dissolving for quick sanitisation
-
Ideal for temporary chlorine boosts
-
10% more chlorine than standard calcium hypochlorite
-
Effective against bacteria and algae
-
Calcium-enriched formula to balance water
Use as a quick solution to keep your pool clean and safe for short periods.
3 in stock
Genuine ACTI 2KG Floc Granules
Genuine ACTI 2KG Floc Granules are your go-to solution for achieving crystal-clear pool water. Designed to effectively sink unwanted debris to the bottom of the pool, these granules make it easy to maintain a sparkling clean swimming environment. Ideal for regular maintenance or addressing clarity issues, ACTI Floc Granules work in conjunction with your sand filter to remove fine particles that can cloud your water.
Key Features & Benefits
- Effective Flocculation: Aggregates and sinks debris for easy removal.
- Easy Application: Simply pre-dissolve and distribute over the pool surface.
- Quick Results: Leaves your pool sparkling clean within 12-24 hours.
- Compatible with Sand Filters: Specifically formulated for optimal performance with sand filtration systems.
Achieve and maintain pristine water clarity effortlessly with Genuine ACTI Floc Granules!
3 in stock
Genuine Aqua Sparkle O2 Gentle Spa Starter Kit
The Genuine Aqua Sparkle O2 Gentle Spa Starter Kit provides a complete, chlorine-free spa care solution, ideal for sensitive skin and those seeking a gentler approach to spa water maintenance. This easy-to-use, two-step oxygen system maintains soft, clear, and odour-free water in your spa or hot tub. The kit includes everything needed to establish and maintain an inviting, chemical-free environment for relaxation.
- Chlorine-Free, Gentle Sanitisation: Uses active oxygen treatment to keep water fresh without harsh chemicals, ensuring a soft, comfortable spa experience.
- Complete Care Kit: Includes 1kg of O2 Gentle Granules, 5L of O2 Gentle Liquid, 500g of pH Plus, 3-way test strips, a measuring scoop, and an easy-to-follow guide.
- Odour-Free, Balanced Water: Maintains water clarity and quality while being gentle on skin and hair.
- Simple Two-Step Application: Just add the O2 Granules and Liquid according to instructions, ideal for weekly maintenance and ongoing spa care.
- Initial Chlorine Shock: For new or drained spas, an initial chlorine shock ensures clean water for the active oxygen system.
Enjoy the perfect blend of comfort and cleanliness with Aqua Sparkle’s O2 Gentle Spa Starter Kit, providing everything needed for a soft, inviting, and low-chemical spa experience.
2 in stock
Genuine ACTI 500g Floc Tablets
ACTI Floc Tablets are easy-to-use 50g flocculant tablets designed specifically for sand filter systems, ensuring your pool water remains crystal clear. Ideal for weekly application, these tablets effectively aggregate and remove fine particles, preventing hazy water and enhancing filtration efficiency. Each tablet treats 40,900 litres (9,000 gallons) of pool water, making maintenance simple and effective. With their dual-action formula, ACTI Floc Tablets not only clarify but also brighten your pool water, creating an inviting swimming environment for family and friends.
Key Features:
- Effective Clarification: Targets and removes fine particles for sparkling water.
- Weekly Use: One tablet per 40,900 litres (9,000 gallons) for optimal clarity.
- Dual Action: Clarifies and brightens water simultaneously.
- User-Friendly: Simple application via the skimmer basket.
- Compatible with Sand Filters: Specifically formulated for sand filtration systems.
Keep your pool looking its best with ACTI Floc Tablets!
2 in stock
Genuine ACTI Multifunctional Chlorine Granules 5KG
Comprehensive 5-in-1 chlorine granules for superior pool maintenance. These premium grade granules sanitise, clarify, stabilise, prevent algae, and support water balance—offering a complete solution for clean and safe swimming conditions.
-
Premium grade 5-in-1 multifunctional chlorine granules
-
Sanitises, clarifies, stabilises, and prevents algae growth
-
Supports overall water balance maintenance
-
Suitable for direct application in water above 20°C
2 in stock
Genuine Acti 1Ltr Water Clarifier
Genuine Acti Spa Water Clarifier is a powerful solution designed to maintain the clarity and cleanliness of your spa water. By binding small, suspended particles such as dead algae and skin cells into larger clumps, this clarifier makes it easier for your filtration system to capture and remove impurities, preventing dullness and cloudiness.
Key Features:
- Effective Particle Binding: Gathers tiny debris for easier filtration.
- Consistently Clear Water: Prevents cloudiness, keeping your spa inviting.
- Simple Weekly Maintenance: Easy dosage ensures hassle-free upkeep.
- Adjustable Dosage: Increase dosage for cloudy or green water.
Dosage Instructions:
- Initial Treatment: 5ml per cubic meter (m³) of water.
- Weekly Maintenance: 2.5ml per m³ of water.
- For Cloudy Water: Double or triple the dosage as needed.
Make Genuine Acti Spa Water Clarifier an essential part of your spa care routine for a consistently refreshing and enjoyable spa experience.
1 in stock
Premium Grade O2 Gentle Liquid 0.5L
A premium, chlorine-free liquid sanitiser specially designed to work alongside O2 Gentle Granules. This gentle active oxygen system offers effective spa water treatment without the harshness of chlorine or bromine—perfect for sensitive skin and a fresher, more comfortable spa experience.
-
Chlorine-free, non-halogen liquid sanitiser
-
Works exclusively with Aqua Sparkle O2 Gentle Granules
-
Ideal for sensitive skin and odour-free soaking
-
Supports a soft, gentle, and balanced spa environment
-
Easy weekly dosing as part of a two-step treatment system
-
Suitable for new spas or those switching from chlorine systems
3 in stock
Genuine Relax Stabilised Chlorine Granules 1KG
Ideal for everyday pool and spa care, these genuine stabilised chlorine granules provide fast, reliable disinfection to keep your water crystal-clear and bacteria-free. Designed to dissolve quickly, these granules have minimal impact on pH levels, ensuring easy maintenance without frequent adjustments. Thanks to UV stabilisation, chlorine levels are preserved even under direct sunlight, making them perfect for outdoor pools. With a range of application methods, they can be added directly to water over 20ºC or pre-dissolved if cooler, adapting to your pool’s specific needs.
Ensure your water stays safe and inviting with this essential treatment, available immediately in our stock.
- High-Strength Chlorine: Swiftly raises chlorine levels, effectively sanitising your pool and spa.
- Quick-Dissolving Formula: Dissolves rapidly with minimal pH impact, ensuring balanced water chemistry.
- UV-Stabilised Protection: Reduces chlorine loss due to sunlight, maximizing efficiency for outdoor use.
- Versatile Application: Apply directly to warm water or pre-dissolve for cooler conditions.
4 in stock
Genuine Lo Chlor 35g Miraclear Cube
Genuine Lo Chlor Miraclear Cubes offer an effective, easy solution for maintaining sparkling water clarity in pools and spas, particularly those using cartridge filters. Each 35g cube delivers 30 days of ongoing clarity by capturing tiny particles that standard filters often miss. Designed for ease and efficiency, Miraclear Cubes are compatible with all common filter types and water treatments, and they also help remove dissolved metals like iron, copper, and manganese, ensuring balanced, crystal-clear water.
Key Benefits:
- 30-Day Continuous Treatment: Each cube provides lasting clarity, reducing the need for frequent maintenance.
- Exceptional Water Quality: Targets and removes tiny particles that regular filtration systems can’t catch.
- Specially Formulated for Cartridge Filters: Ideal for pools and spas with cartridge filters but compatible with D.E. (diatomaceous earth) and sand filters.
- Removes Dissolved Metals: Effectively targets and reduces metals such as iron, copper, and manganese to maintain balanced water chemistry.
- Simple Application: Place a cube in the skimmer or pump basket and enjoy clear water with minimal effort.
- Versatile Compatibility: Works seamlessly with most common pool and spa water treatments, making it suitable for a range of maintenance routines.
Ideal For:
- Cloudy Water Treatment: Perfect for pool and spa owners seeking an easy solution to eliminate cloudiness.
- Adding Sparkle: Enhances the water’s appearance, giving it an inviting sparkle and fresh look.
- Cost-Effective Maintenance: Offers a hassle-free, budget-friendly option for long-term clarity in pools and spas.
Enjoy consistently clear, attractive water with Lo Chlor Miraclear Cubes – the user-friendly choice for maintaining pristine pool and spa conditions all season long.
3 in stock
Genuine Blue Horizons JellyCLEAR Cube 70g
Genuine Blue Horizons JellyCLEAR Cubes are innovative gel blocks designed to enhance pool water clarity and filtration efficiency. Packaged in convenient single-use presentations, these cubes coagulate debris and tighten the filter bed, ensuring your pool water remains sparkling clear. Each gel block treats pools with a capacity of up to 50,000 litres (11,000 gallons) and provides effective clarification for up to two weeks.
Key Features & Benefits
- Efficient Filtration: Enhances filtration efficiency by coagulating debris and tightening the filter bed, resulting in cleaner water.
- Convenient Application: Packaged in single-use cubes for easy handling and application.
- Long-lasting Performance: Each cube effectively treats up to 50,000 litres (11,000 gallons) of pool water for up to two weeks.
- User-Friendly: Simply place in skimmers or weirs, making it a safe and hassle-free solution for pool care.
- Consistent Results: Provides lasting clarity as the active ingredients continue to work even after the cubes dissolve.
Application Instructions
- Algae Pre-Treatment: Ensure any algae present in the pool is pre-treated within the previous 24 hours to effectively release it from the walls.
- pH Adjustment: Adjust the pH of the pool water to the ideal range of 7.2 – 7.6 for optimal performance.
- Filter Maintenance: Backwash the filter or clean the cartridge, then return it to the normal filtration setting.
- Cube Placement: Peel off the protective plastic film from the JellyCLEAR Cubes and insert them directly into the pump strainer basket or skimmer/weir basket.
- Dissolution Process: Allow the JellyCLEAR Cubes to dissolve gradually over a period of 3 – 4 days, depending on the water flow from the filtration cycle. The active ingredients will continue to provide a lasting residual effect beyond their physical disappearance.
By following these steps, you can effectively use Blue Horizons JellyCLEAR Cubes to enhance the clarity of your pool water. Adhering to the specific recommendations ensures optimal results for a clean and inviting pool experience.
11 in stock














