In The Swim Super Algaecide for Above Ground or Inground Swimming Pools – Low Odor, Non-Foaming Preventative for Yellow/Mustard Algae in Swimming Pools - 7.1% Chelated Copper – 1 Quart

I'm a relatively new pool owner since I moved into my new house. When I ran out of the chemicals that were left behind by the previous owner, I picked this one up to help get rid of the algae that built up in the spring (we didn't open our pool until late because we had a vacation planned in June).To say our pool was green would be an understatement. When this algae cleaner arrived I followed the instructions on the bottle (I love that it has ounce markings on the side so it is easy to use the right amount based on pool size). The next morning, my pool was noticeably less green. I use those 'pool socks' on my filter, so I could also see TONS of algae getting filtered out, which means the algae was dying off and getting filtered out.Anyway, long story short, this product works as advertised and was priced right (which is why I bought it). It worked faster than I expected. It did take a few days for my water to become completely clear, but that was because the filter needed time to pull out all the dead algae. I'll also note that based on how much I used this treatment, I think this bottle will last me at least 2-3 summers.

Good product, I have used before with good results. There Is a clear stripe on the side of the bottle showing the blue liquid. The stripe is scaled in ounces. Makes it easy to measure.

This product works great for us, no algae. I use along with Pool RX and Burn out 73 it keeps everything under control. Arizona summers can be a struggle against algae otherwise. We have been pool owners for 6yrs. We had no idea what we were doing originally. Struggled about 2yrs. We had issues with algae, first green than mustard. L----- pool supply just kept telling us to do this and that. The amout and cost of products just kept getting bigger. So we found another pool store and were told to get a good algaecide, clean everything and shock the heck out of it. We looked at tons of algaecides, read reviews and my husband finally found this algaecide on Amazon. We added the initial dosage, 6oz for our 15,000 gallon pool than burshed down the pool and ran the pool pump for 24hrs. The next day we sprayed the pool filters clean and soaked them in a large tub of water with a half bag of Burn out 73, removed vacuum, hoses and leaf basket scrubbed them clean and soaked in the Burn out 73 shock water also for about 6hrs. Sprayed everything off again and hooked it all back up. Added 6 bags of the burnout 73 to the pool and ran the pump another 24hrs. The next day we put a pool RX in the skimmer basket and returned to maintenance. It killed the algae and we haven't struggled since. We prep our pool for winter in Fall( Oct.) I clean the filters and add 4 bags of shock and the initial 6oz of this algaecide 1 day apart at night, run pump 4 to 6 hrs each night, add chlorine tabs as needed that's it. For Summer start up (end of Apr./ beginning of May) I clean filters and at night add 4 bags of shock and brush the pool, next day add the the initial 6oz of this algaecide, next day a new Pool RX in the skimmer basket and 4 chlorine tabs in float. Running pool pump 8hrs each night in the summer. I have had no algae issues for the last 4yrs. with this maintenance combination during the summer: 4 chlorine tabs in float, 2 bags of shock and 3oz of algaecide. I do this every other week 1 day apart between shock and algaecide, and of course 1 pool rx at beginning of summer in skimmer basket. I don't even do chemical testing anymore. I have clear, clean, blue pool. I use BioGuard burnout 73 shock. Which has 73= % of Calcium Hypochlorite in each bag. Pool filters need cleaning at least 2 more times each yr.( so usually Oct.,Jan., Apr.,July). This is for a 15,000 gallon pebble tek in ground pool. It might sound like a lot of work, but once you get the algae under control the maintenance is easy. We don't struggle, we're not throwing money away and we're not adding extra unnecessary chemicals.

Helped along with fast dissolving chlorine granules to clean up my pool water from the winter.

We always get algae blooms in spring and throughout summer if the chlorine level drops at all. This stuff is amazing. It keeps the algae in check. I am using half the chlorine it used to need and the algae never gets a foot hold. Just remember to do the maintenance dose every 2 weeks. Saved $100 on chlorine costs in just 3 months. Plus the water is much nicer on the skin and the smelly chlorine is not everywhere.

Holy cow. Been fighting mustard algae all summer. Not anymore. Sure wish I had got this stuff months ago.

Cleared up my only algae bloom early in the season and has helped prevented any more issues. Just follow the instructions and dilute in a 5 gallon bucket, unlike what I did the first time 😏

Thought I had dust in pool- couldn’t clear for the life of me!It was chlorine resistant algae- I suspect mustard.Clear as a bell in 2 days! 🙏No staining after treatment