CTX-39 PoolGel is a specialized skimmer flocculant gel designed to prevent cloudy water and drastically improve the retention of fine particles in pools equipped with sand or recycled glass media filters. Application is incredibly simple, clean, and mess-free: just place the single-dose gel block directly into the skimmer basket following the recommended dosage guidelines.
What does CTX-39 PoolGel do?
Even with a well-maintained filtration system running, swimming pool water frequently loses its transparency and brilliance. This is caused by microscopic suspended particles, wind-borne dust, swimmer waste, heavy rain debris, and algae spores.
CTX-39 PoolGel acts as a powerful coagulant, agglomerating these micro-fine colloidal particles into larger clusters that would otherwise pass straight through a standard filter bed due to their microscopic size. By binding them together, it allows your filter to trap them easily, restoring crystal-clear, sparkling brilliance to your pool water.
It is the ultimate solution for pool owners seeking maximum water clarity with a convenient single-dose format, completely eliminating the precise measuring, heavy lifting, and spill hazards associated with traditional liquid flocculants.
Dosage and Application Instructions for CTX-39 PoolGel
CTX-39 PoolGel must be placed directly into the skimmer basket so it can dissolve slowly and continuously work throughout the pool’s hydraulic filtration circuit.
Step-by-Step Application Guide
- Perform a thorough filter backwash before starting the treatment to ensure maximum filtration efficiency.
- Remove the CTX-39 PoolGel block from its protective plastic film.
- Place the gel block directly into the skimmer basket.
- Keep the filtration system running under normal scheduling to allow the product to dissolve gradually.
- After 24 hours, perform another filter backwash to flush out all the trapped debris, then resume your regular filtration program.
What to expect after applying CTX-39 PoolGel
Once placed in the skimmer, the gel block dissolves in a highly controlled, slow manner. As it circulates through the filter, it captures suspended turbidity, heavily increasing filter efficiency and consequently enhancing the performance of your pool sanitizers (such as chlorine or bromine).
The result is noticeably more transparent, pristine, and pure water achieved with minimal maintenance effort.
Recommended Dosage
- Initial / Shock Treatment: Add 5 gel blocks (pastilles) per 100 m³ of water if the pool water is highly turbid or severely clouded.
- Routine Maintenance Treatment: Add 2 gel blocks (pastilles) per 100 m³ of water every fortnight (every 15 days).
Why choose CTX-39 PoolGel for cloudy pool water?
CTX-39 PoolGel stands out for its unmatched convenience and precise dosing. Supplied in a practical 36-unit bulk pack, it allows you to effortlessly keep your pool water flawless for several months.
- Slow-dissolving single-dose flocculant gel block.
- Eliminates direct contact with liquid chemicals or complex dosing pumps.
- Drastically boosts the particle-trapping capacity of sand or glass filters.
- Helps capture dead algae spores and microscopic organic matter.
- Value-for-money 36-unit bulk pack, perfect for lasting an entire swimming season.
Why buy CTX-39 PoolGel from Pools&More
At Pools&More, you can purchase the CTX-39 PoolGel 36-unit pack with the full warranty and support of an expert team specializing in swimming pools, chemical treatments, and advanced filtration engineering.
As official distributors of the CTX Pro range, we help you evaluate your specific water parameters and ensure product compatibility prior to purchase.
- Official CTX Pro Authorized Distributor.
- Specialist store in pool maintenance and filtration systems.
- Professional technical advice before and after buying.
- Dedicated guidance on finding the best solutions for clear, sparkling water.
Frequently Asked Questions (FAQ)
What is the primary purpose of CTX-39 PoolGel?
CTX-39 PoolGel is a single-dose flocculant and water clarifier in gel format. It aggregates microscopic suspended debris and colloidal dirt so that sand or glass media filters can effectively trap them, resolving dull or cloudy water problems.
How do I apply PoolGel to my pool?
Simply unpack the gel block from its protective plastic film and drop it directly into your pool’s skimmer basket. The product will dissolve slowly as water passes through the filtration circuit.
What is the correct dosage for regular maintenance?
For standard maintenance, apply 1 gel block per 60 m³ of pool water every 15 days.
Can I use PoolGel with cartridge or diatomaceous earth (DE) filters?
No. CTX-39 PoolGel is strictly designed for granular filter media like sand, quartz sand, or glass media. Utilizing it in cartridge or DE filters will clog the fine pores of the filter elements, causing permanent damage.
Does CTX-39 PoolGel replace chlorine or pH adjustment?
No. PoolGel increases water transparency and optimizes mechanical filtration, which helps sanitizers work more effectively. However, it does not replace the crucial need to monitor and balance chlorine, bromine, or pH levels.
Is a filter backwash mandatory after using the product?
Yes. It is highly recommended to perform a clean backwash right before applying the product, and it is mandatory to run another backwash 24 hours later to flush out all the accumulated waste trapped by the gel.
Will this product clear up a green pool plagued by active algae?
Not on its own. PoolGel excels at trapping dead algae cells after a shock treatment. If your pool is actively green with live, blooming algae, you must first execute a chlorine shock treatment and apply an appropriate algaecide before attempting to clarify the water.




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