How long does one dose last?

Initial dose lasts 6-8 weeks; maintenance dose covers 1-2 weeks each.

Will it kill existing algae?

Light blooms yes; heavy bloom needs a chlorine shock first then polyquat as a follow-up preventer.

No. Polyquat is non-foaming, suitable for aerated jets and water features.

Yes. No copper, no metal staining, safe for plaster and hair.

How long does a 5 L drum last?

Around 12-15 maintenance doses for a typical 40 m³ pool, or one season of fortnightly dosing.

What is the active ingredient?

Polymeric quaternary ammonium chloride (polyquat) at 50% w/w.

Quaternary ammonium algaecides foam; the long-chain polymer form does not, because the active surfactant chains are bound into the polymer backbone.

Does it consume chlorine?

No. Polyquat works independently of the chlorine bank, freeing chlorine for bacteria.

Check you have not mixed in a quat-based algaecide; polyquat alone does not foam.

Brush more, increase dose, check circulation reaches all corners.

Polyquat vs copper-based?

Polyquat is staining-safe and non-foaming; copper kills mustard algae faster but stains plaster and lightens hair.

Polyquat vs quat algaecide?

Polyquat is the polymer version; non-foaming, longer lasting. Standard quats foam under aeration.

Pool Long-Life Algaecide - Non-Foaming Quaternary

Name: Pool Long-Life Algaecide - Non-Foaming Quaternary
Brand: ClearSpa
SKU: pa-1
Availability: InStock
Rating: 5.0 (7 reviews)

Polymer (polyquat) long-life pool algaecide that prevents green, mustard and black algae across an 8-week dose. Non-foaming, copper-free and safe for all pool surfaces.

Prevents algae growth for up to 8 weeks per dose.
Active across green, mustard and black algae strains.
Non-foaming under aerated jets and waterfalls.
Copper-free; will not stain plaster or hair.
Boosts the effective range of chlorine sanitiser.