AquaDoc Copper Pool Algaecide for Swimming Pools - 32 oz - 90 Day Algaecide for Inground & Above Ground Pools - Non-Foaming, Non-Staining Formula, Reduces Chlorine Demand

I had some algae and slime on the water surface in the skimmer. Based on the calculations I have A 1300 gallon pool. And I used 4 ounces for an aggressive treatment. Once a month I will Put 2 ounces to prevent. This product works and it works well. This won’t treat black algae as the black algae has a protective layer you’d have to scrape off the black algae. But geeen algae no problem. If you have black scrape it first, then pour this product in and vacuum the pool.

ATTENTION: this is a COPPER BASED PRODUCT, you only need this for special types of algae that are not cooperative with chlorine and brushing! BE CAREFUL, "RTFM" (read the manual)! If you do this, it will work for black algae, and takes about 2 weeks to start breaking it down. Otherwise you have to drain your pool, wait for the black algae to die, and then pressure wash or acid the black algae off. This stuff is MAGIC, just RTFM!

Once a year my pool gets a black algae. This is the only thing that works.

Edit: I may have been displeased with the product but the customer service was excellent! I’m not pleased with this. It just seemed to turn water blue but not kill algae. Won’t boy again. I haven’t 2 stars because it did slightly but not to the effect I expected .

I've been having trouble with my ingound pool this season with a lot of green algae. I've tried everything from testing the chemicals and adjusting them, shocking the pool over and over, and even draining the pool Of 11,500 gallons and changing the water. Within a week the pool was green again. I stumbled upon this algaecide and read the reviews and kept my fingers crossed. That was over a month ago and my pool is still clear. This is the longest it's gone without algae this season since I use this alga side.

I used the entire bottle exactly as directed and saw zero results. The algae in my pool didn’t improve at all—no reduction, no prevention, nothing. For something marketed as a “90-day algaecide,” this was extremely disappointing. I’ve had much better and consistent results sticking with Clorox products, which have never failed me. This felt like a total waste of money and time.

Good and expensive

Cleaned my pool up