The Piscimar Ultra Clear PM-643 is an enzymatic super clarifier and coagulant for pools, designed to restore water that has turned cloudy, dull or heavily loaded with organic matter. It works by binding fine suspended particles, dead algae, oils and organic residues into larger clusters that your filter can capture – without acting as an algicide or replacing your regular disinfection routine.
What Piscimar Ultra Clear PM-643 is used for
Pool water can lose its sparkle for many reasons: fine particles too small for the filter to catch, a build-up of organic debris, or the aftermath of a shock treatment that has left dead algae floating in suspension. This is exactly where the Piscimar Ultra Clear PM-643 earns its place.
After a shock treatment, dead algae, body oils and other organic residues often remain in the water, leaving it hazy or flat-looking even when disinfectant levels are correct. Ultra Clear groups those particles together so the filter can do its job more effectively, restoring clarity and shine without replacing any part of your normal water treatment programme.
Dosage and application guide for Piscimar Ultra Clear
Before applying Piscimar Ultra Clear PM-643, make sure filtration is running and that the water genuinely needs clarification – fine particles, organic matter or dead algae in suspension are the right triggers.
Recommended dosage
- Maintenance dose: 0.75 L per 100 m³ of pool water, every 15 days.
- Shock / recovery dose: 1 L per 100 m³, applied after a superchlorination treatment.
- Application: pour directly into the pool with filtration running, distributing evenly around the whole pool.
- Note: always follow the dosage printed on the product label you have purchased.
Step-by-step application
- Calculate your pool volume to work out the correct amount needed.
- Check disinfectant levels – free chlorine must be below 1.5 ppm (bromine below 3 ppm, active oxygen below 35 ppm) before applying.
- Keep filtration running before, during and after application.
- Distribute Ultra Clear evenly across the pool surface, respecting the dosage for your volume.
- Allow the product to work through the filter – grouped particles will be captured as water circulates.
- Monitor water clarity and carry out routine filter maintenance (backwash or rinse) as needed.
What to expect after applying Piscimar Ultra Clear
Once Piscimar Ultra Clear PM-643 is in the water, it begins binding suspended particles so the filter can remove them as water circulates. Clarity and sparkle typically return gradually as filtration does its work.
Unlike many traditional flocculants, Ultra Clear works through the filter rather than dropping particles to the pool floor. That means no cloudy sediment to vacuum up afterwards – the filter handles everything.
If the water remains green or cloudy, look beyond clarification: check pH, disinfectant levels, daily filtration hours and whether an active algae problem is present. Ultra Clear supports the clarification process but cannot correct underlying water chemistry imbalances on its own.
Why choose Piscimar Ultra Clear for cloudy pool water
When pool water loses its transparency – turning hazy, flat or visibly loaded with particles that normal filtration struggles to remove – the Piscimar Ultra Clear PM-643 is a practical, targeted solution.
It is particularly well suited to recovery situations: after shock treatments, following heavy bather loads, or when organic debris has built up faster than the filter can cope. Key benefits at a glance:
- Restores cloudy and dull pool water.
- Improves water clarity and sparkle.
- Effective after shock treatments with dead algae in suspension.
- Helps biodegrade organic matter and oils enzymatically.
- Compatible with a wide range of filtration systems – sand, glass media (Vidromar), diatomaceous earth, cartridge and zeolites.
- Suitable for spas and heated pools.
Ultra Clear is not an algicide and does not replace pool disinfection. Use it when the goal is to improve water clarity and support your filter – not as a standalone treatment for green water.
Why buy Piscimar Ultra Clear from Pools&More
At Pools&More you will find the Piscimar Ultra Clear PM-643 backed by a specialist team with deep expertise in pool water treatment and cloudy water recovery.
As an official Piscimar distributor, Pools&More can help you decide when Ultra Clear is the right call – whether you are dealing with post-shock haze, persistent dullness, fine particle suspension or a waterline build-up of organic residue.
- Official Piscimar distributor.
- Specialist pool water treatment retailer.
- Pre- and post-purchase advice included.
- Guidance on the right product for cloudy or dull pool water.
Frequently asked questions
What does Piscimar Ultra Clear PM-643 do?
Ultra Clear PM-643 is an enzymatic super clarifier that restores transparency to cloudy or dull pool water. It binds fine suspended particles, dead algae and organic residues into clusters large enough for the filter to capture.
Is Ultra Clear the same as a flocculant?
Not exactly. Ultra Clear acts as a coagulant and super clarifier that works through the filter, grouping fine particles so they are retained during filtration. Traditional flocculants typically drop particles to the pool floor as sediment, which then needs vacuuming.
Does Ultra Clear replace chlorine or an algicide?
No. Piscimar Ultra Clear PM-643 is a clarification aid only. It does not replace chlorine, bromine, active oxygen, algicide, pH correction or filtration. Use it alongside your normal water treatment routine, not instead of it.
What is the correct dosage for Piscimar Ultra Clear?
The maintenance dose is 0.75 L per 100 m³ every 15 days. For recovery after a shock treatment, use 1 L per 100 m³. Always check the label on the bottle you have purchased and adjust for your pool’s exact volume.
How do I apply Ultra Clear to my pool?
Pour the product directly into the pool with filtration running, distributing it evenly around the perimeter. Keep the filter running continuously after application so it can capture the particles that Ultra Clear has grouped together.
Can I use Ultra Clear with a salt chlorinator?
Yes, but you should switch the salt electrolysis system off during treatment. Once the clarification cycle is complete and water chemistry is stable, you can restart the system. Follow the label instructions before applying.
Is Ultra Clear compatible with cartridge filters?
Yes. Piscimar Ultra Clear PM-643 works with sand, glass media, diatomaceous earth and cartridge filters. After treatment, clean or rinse the filter cartridge as needed – it will have captured the grouped particles and may need attention sooner than usual.
The water is still cloudy after applying Ultra Clear – what should I check?
Check pH (target 7.0-7.4), free chlorine levels, daily filtration hours and filter condition. If algae are present, treat those first. Ultra Clear supports clarification but cannot fix underlying chemistry or biological problems on its own.
Will Ultra Clear clear a green pool?
Ultra Clear should not be used as the primary treatment for a green pool. First address the root cause – active algae, low disinfectant or pH imbalance – with a shock treatment. Once that is resolved, Ultra Clear can help restore water clarity and sparkle.
| Weight | N/A |
|---|---|
| ultraclear | 1L, 5L |
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