Used this product for years. Works well.

This is the first time I tried this product. I had algae in my pool and now it's under control with Members Mark product.

Removed algae from walls still fighting algae on pool floor; product causes foam not terrible but does not go away

I have tried different algae control products, but this one is the real deal, it really destroyed the algae other products were not able to.

Sam’s club products are the best and Sam’s makes it so easy to shop on line instead of waiting on lines in the store

Effective algaecide, but foams. Good for pools without attached spa, waterfalls, or spray features. Otherwise, be prepared for lots of foamy bubbles.

This is the only algaecide I use since trying it years ago. It is concentrated so it requires far less in the pool to get the job done.

We fought yellow algae in our pool for a couple months. Then we tried this product and it's gone with the first use and has been gone for over a month. Highly recommend.

Clears your pool right up!

glad to get it. Used it last y;ear with great success