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Best chlorine float UK

Updated: 23 October 2026

You want one chlorine float from this amazon.co.uk set. For 20 g tablets, the top pick is the Gre FDP20 at £11.82, because the listing names ABS and a four-year warranty and the review count is 4.3 from 427. The best value is the Steinbach Mini 79050 at £5.39, at 4.4 from 2,370, if you accept the missing-lid and stuck-ring notes. Both verdicts fail if your tablets are 200 g pucks. The full grid is the [dosing float comparison](/hub/diy-supplies/dosing-float). Peter F. checked the stored listings, not a lab. A qualifying purchase can earn a commission at no extra cost to you.

You want one chlorine float from this amazon.co.uk set. For 20 g tablets, the top pick is the Gre FDP20 at £11.82, because the listing names ABS and a four-year warranty and the review count is 4.3 from 427.

Our top picks

EduPlayte EduPlayte 5 inch float

Best overall

EduPlayte EduPlayte 5 inch float
10.0/10about £4.99
View offer
Steinbach Steinbach Mini 20 g float

Best value

Steinbach Steinbach Mini 20 g float
8.8/10about £5.39
View offer
Gre Gre FDP20 20 g float

Rank 3

Gre Gre FDP20 20 g float
8.6/10about £11.82
View offer
On this page
  1. 1.Top pick for 20 g tablets
  2. 2.Best value, with the lid problem
  3. 3.What not to treat as best
  4. 4.If your tablets are not 20 g

Top pick for 20 g tablets

The Gre FDP20 is the top pick when your tablets are 20 g and you want a named material plus a warranty sentence you can point at. The bullets say ABS, 20 g tablets, and a four-year warranty. The price is £11.82. Across 427 amazon.co.uk reviews the line is 4.3. UK reviews say it holds the tablets. The warranty terms are not in the file, so the four years are a claim. One United Kingdom review says the float left a black mark where it rubbed a hot tub. Move it. Adjustable flow is not stated in the amazon bullets. The item-type field says Brush, which is a listing conflict. Skip the Gre for a 200 g puck, a light, or a thermometer.

Best value, with the lid problem

The Steinbach Mini is the best value when you want the review history at £5.39 and your tablets are 20 g. UK buyers say it still does the job. The listing names 20 g tablets and does not give a 3 inch capacity. Material and warranty are not stated. That is the trade against the Gre: less named on the page, far more reviews, and about half the price. Two United Kingdom reviews say the lid shown was missing. One says the blue ring spins the whole base, so the dose could not be set. The bullets do not describe a ring. A missing lid is a description problem under the Consumer Rights Act 2015, so use the seller’s returns route. The maker page marks salt water yes. The amazon file does not, and its euro price is not a UK price.
EduPlayte EduPlayte 5 inch float

Testsieger

EduPlayte EduPlayte 5 inch float
10.0/10about £4.99
View offer

What not to treat as best

A 5.0 from one review is not the best chlorine float in this set. EduPlayte is £4.99 and the title says 5 inch, which is the body. Tablet size is not stated, and there is no review text. Feirdhoo is £10.57, also 5.0 from one review with no text, while its table says 8 × 8 × 1 cm. An empty 5.0 cannot beat 2,370 reviews that include a missing lid. ZWOOS at £26.99 and the pairs at £37.44 and £38.99 are lamps. Their review files here are not United Kingdom reviews. Gaethra’s table says 8 × 7 × 6 cm against four 3 inch tablets. Bestway’s 5 inch floater, 4.5 from 8,290 and specified for 1 inch tablets, is not in this set. If you are still choosing a type, the dosing float buying guide keeps the four kinds side by side.

If your tablets are not 20 g

This page refuses a winner once you leave 20 g. NEIQIUWING is the only listing that says 1.5 inch, at £6.36, with a claimed thermometer and no reviews. Jonuin claims five 3 inch or forty 1 inch tablets. ZWOOS and Gaethra claim large tablets and then argue with their own centimetres. Gre and Steinbach do not print a gram-to-inch conversion. Do not snap a puck to fit a mini, and do not copy a 200 g dose count onto a 20 g chamber. When the tablet in your hand is not 20 g, use chlorine tablet size for a floater.

Common questions

Which is the best value, and what fault comes with the low price?
The best value is the Steinbach Mini at £5.39, 4.4 from 2,370 reviews, for 20 g tablets. Two UK reviews say the lid was missing. One says the blue ring spins the base, so the dose could not be set. You are trading a lower price and a much larger review count against a lid and a ring that some buyers could not use.
Why is a 5.0 from one review not the winner?
EduPlayte and Feirdhoo both show 5.0 from one review and no written text. That number cannot be compared with 2,370 Steinbach reviews or 427 Gre reviews. Feirdhoo also conflicts a 5 inch title with an 8 × 8 × 1 cm table. A single star with no sentences does not tell you whether a lid arrived or whether a tablet fitted.
Should I buy the solar float if I only want chlorine dosing?
No. ZWOOS at £26.99 and the two-packs at £37.44 and £38.99 are lamps with baskets. Their reviews in these files are not United Kingdom reviews. Non-UK notes mention seals, fussy baskets, a dead unit, and a fragile diffuser. A £5.39 Steinbach or an £11.82 Gre does the 20 g dosing job without the lamp.
Is Steinbach’s maker sheet the same as the amazon reviews?
No. The maker page adds a dosage slit, foldable storage, a 12.5 cm diameter, and a salt-water yes. The amazon bullets do not repeat the salt-water line, and they do not describe the ring. The UK reviews add the missing lid and the spinning base, which the maker page does not mention.
What if I use 200 g tablets?
Do not use the Gre or the Steinbach. Both are listed for 20 g. A 200 g puck is the large tablet UK shops sell for bigger pools, about 3 inch in their wording. Forcing it into a mini leaves you with a tablet against a surface or a lid that will not close. There is no winner on this page for 200 g.

Related pages

How to use a chlorine float

Dosing float

Dosing float buying guide: which job you are buying

Chlorine float for a hot tub, not a let-spa feeder

Chlorine tablet size for a floater: 20 g or 3 inch

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Updated 22.10.2026.

  1. HSE: HSG179, Managing health and safety in swimming pools (retrieved 22.10.2026)
  2. HSE: Swimming pools (retrieved 22.10.2026)
  3. HSE: HSG282, Control of legionella and other infectious agents in spa-pool systems (retrieved 22.10.2026)
  4. PWTAG: Code of Practice (retrieved 22.10.2026)
  5. PWTAG: Technical note 68, swimming pool chemicals (retrieved 22.10.2026)
  6. Pool Warehouse UK: chlorine tablets 5 kg (retrieved 22.10.2026)
  7. Consumer Rights Act 2015 (retrieved 22.10.2026)