Pool Waterline & Tile Cleaner - Scale Removing Gel

Heavy-duty pool waterline tile cleaner. Cuts through calcium scale, body oil, sun cream and grime at the tide-line without harming grout, plaster or rubber seals.

• Cuts calcium scale, body oil and sun cream from waterline tiles.
• Safe on grout, plaster and rubber seals at correct dilution.
• Restores waterline finish without abrasive scrubbing.
• Compatible with vinyl liner upper edge cleaning.
• Works in 5-10 minutes per section.

Sizes and prices

• 5L: £18.00
• 10L: £33.25
• 25L: £79.00

When you need it

• Tide-line scum has built up at the waterline.
• Calcium scale is fogging tile or fibreglass at the surface.
• Sun cream and body oil have stained the upper plaster.
• Pool is being prepared for guests or photos.
• Annual deep clean before winter close-down.

How to use

1. Drop water level 5-10 cm below tide-line for working comfort.
2. Dilute 1 part cleaner to 4 parts fresh water in a spray bottle.
3. Apply to one section of tile at a time.
4. Leave to dwell for 5-10 minutes; do not allow to dry.
5. Scrub with non-abrasive sponge or soft brush.
6. Rinse thoroughly with pool water before moving to next section.

Dosing guide

Apply diluted; one undiluted litre covers around 20 m of waterline tile when sprayed at 1:4 dilution.

• For 10 m waterline, add 50 ml diluted to reach One section clean.
• For 30 m waterline (mid pool), add 150 ml diluted to reach Full waterline clean.
• For 60 m waterline (large pool), add 300 ml diluted to reach Full waterline clean.
• For Heavy scale, add Apply twice with rinse between to reach Repeat dwell cycle.
• For Annual deep clean, add Plan 1 L undiluted to reach Full perimeter.

How it works

Acid-surfactant blend based on phosphoric acid (5-10% w/w) and non-ionic surfactant for combined scale and grime cutting.

The phosphoric acid dissolves calcium carbonate scale; the surfactant breaks up oils and surfactant residue from sun cream. Together they release the tide-line in a single pass.

Mechanical scrubbing alone cannot break calcium scale and pure soaps cannot strip oils. The dual-action blend is the only practical way to keep waterline tile clean without dropping water level entirely.

Frequently asked questions

How do I dilute it?

1 part cleaner to 4 parts fresh water in a spray bottle.

How often should I clean tiles?

Monthly during heavy use; quarterly otherwise; annually as a full perimeter deep clean.

Will it damage my grout?

Not at correct dilution. Always test on a hidden patch first.

Pack sizes?

1 L spray and 5 L refill drums.

Will it harm my liner?

Safe on PVC vinyl liners at correct dilution; rinse promptly. Avoid prolonged contact.

Is it the same as bathroom limescale remover?

Same family but pool-grade is balanced for waterline use; bathroom acids may be too aggressive on grout.

What is the active ingredient?

Phosphoric acid 5-10% w/w with non-ionic surfactant blend.

Why phosphoric acid?

Phosphoric is gentler on grout than hydrochloric or sulphamic; targets calcium without etching cement.

Will phosphate feed algae?

At rinse-back ppm levels yes, marginally; never let cleaner enter pool unrinsed. Top up phosphate remover at next routine if needed.

Scale won't budge?

Repeat dwell at 10 minutes; switch to undiluted spot application for hardest scale.

Grout damage?

Rinse immediately; reduce dilution next time; switch to milder cleaner if persistent.

Tile cleaner vs bathroom limescale?

Pool-grade is gentler on cement grout; bathroom products often etch grout in pool environments.

Tile cleaner vs vinyl cleaner?

Tile cleaner is acidic for scale; vinyl cleaner is detergent-only for plastic surfaces. Different jobs, different chemistry.