Natural Chemistry05141 Pool Magic Phosfree, 1-Liter

I put this in when I closed the pool last year and in the spring had zero algae or cloudy water at opening.

Have used this for years. Seems to help keep pool water clear and clean.

This is what to use for a good opening treatment of your pool. Then move on to PhosFree for the summer and say good riddance to green algae.

Works well but really pricey for the amount they give you.

Good

We have been using this for 9 years and we use 1 liter at the time of opening and 1 liter at the time of closing for our 18x36 pool. Using a high chlorine level along with a balanced pH at the time of closing our pool with this product too has made for a clear pool every spring! We wouldn’t be without this! We hope they never stop making this!

Used this product for a few seasons to open the pool, but this year was first time ordering from Amazon and both bottles I ordered leaked in the bag!

Great product at a great price. Works well in cold water at my pool opening and helps keep the pool water clean at closing.