5L of Pro-Kleen Spa Clarifier - Achieve Brilliant, Sparkling Water - Improves Filter Performance & Efficiency

This clarifier has really helped us achieve and maintain crystal clear water in our large pool. When combined with careful chemical management, it makes a noticeable difference. Great value for the size — highly recommend if you’re looking to keep your water sparkling.

Works well and the 5 litre container is great as it lasts a good while.Definitely a product I would buy again

First time I used it I put more clear water in then I should. Read the instructions and hey presto.

As stated and does work just needed more as have a bigger pool than a spa or hot tub

Great stuff and better value than the leading competitor

This product works fantastically, a lot better than the previous brand of clarifier I was using and at the offer price of £15 for 5 litres it’s incredibly cheap.I added this to my pool and within an hour there was noticeable improvement. Within a few hours was looking great. Within 12 hours was looking outstanding.Anyone who is giving this bad reviews probably doesn’t understand pool chemistry or how this product is meant to work. It’s not a replacement for chlorine and proper water chemistry, infact with some types of filters you shouldn’t need this at all. I have a sand filter (with glass media). Generally it’s quite good but doesn’t catch the smallest of particles that end up building up in the pool and causing dull / cloudy water. With this it traps smaller particles and my water is crystal clear!

We had a problem with my old filter pump, so the pool water sat stagnant for a while. This made all sorts of algae and larvae (literally thousands of mosquito larvae!!) grow.I shocked the pool, and the water went cloudy, the new (much more powerful filter) i purchased could only do so much, but the water remained quite cloudy.I used only a little bit (probably 3 lids worth) and within half an hour, the pool already looked noticeably clearer! Must use in conjunction with filter to get all the coagulated bits out.I'm really happy with my purchase, and have plenty left to use for the rest of the season. I've never had so much success with clarifying my 12ft above ground pool. It looks just as clear now as if I had just put new water in.Photo is of the pool an hour after using this product with filter on.

The packing doesn't give any guidance on dosing beyond "a couple of cupfuls for your spa" which isn't helpful if you've got a pool of any kind. On the manufacturer's website they've responded to questions with some guidance. They've stated 2 capfuls per 1000ltrs. Most spas are between 750ltrs and 1500 ltrs so that kind-of makes sense. However, they also state 2 capfuls is 50ml. I've measured 2 capfuls of the 5ltr pack with very accurate scales and it's more like 30ml so their advice isn't great.I landed on: 30ml per 1000 litresExample: for my 35,000 litre pool I'd need 30ml*35 = 1050ml (i.e. 1 litre). However, I rounded down to 700ml to be conservative and squeeze 7 doses from a 5 litre pack.