Huolewo 20000 Pcs/20 bottles Magic Pool Cleaning Tablets, Crystal Clear Pool Cleaning Tablets Multifunction Swimming Pool Water Sanitizers for Swimming Pool and Spa Treatment

Really good so worth the wait for them to come I have quite a large pool and these keep it fresh and clean and not harmful to kids

Takes about 12 in a 900 pool to get balance correct. They dissolve instantly! AND vary in how long they last. Sometimes 3 days, sometimes 10.Awful product.

Only gave one star as you cant give a minus star. The instructions are very misleading and when I emailed the seller to enquire re: this I got very short quips for answers...I told him they dissolve within seconds and he replied they are supposed to despite saying on the bottle 3xtimes slower dissolving...It says on bottle to use 7 for 2500 gallons water...I used 4 in a 750gal pool...theres no difference and when I enquired seller told me to use 50.!!!...Very misleading...Dont waste your money...

Got these for my 12 ft pool for the summer and it worked brilliant and will bye more so good with the water and pump