Help after opening my 18 round above ground pool. I've shocked x3 with a powder formula from Walmart. Yesterday treated with algecide and a 3 in one shock. The algae will still not brush off the sides or places on the bottom. The water is crystal clear though. I added a stabilizer yesterday along with a gallon on bleach. Just tried brushing and it still will not come off. I had my husband test yesterday.
Before stabilizer ph 7 and chlorine were high. Later in the afternoon he retested and ph was within range according to our test kit chart. Chlorine was not a shock so we added the stabilizer and a gallon of bleach overnight. We also added about half the depth with new water. About 2 wks ago on opening. TIA
Before stabilizer ph 7 and chlorine were high. Later in the afternoon he retested and ph was within range according to our test kit chart. Chlorine was not a shock so we added the stabilizer and a gallon of bleach overnight. We also added about half the depth with new water. About 2 wks ago on opening. TIA
Unfortunately however, all of the chemicals and things you've tried before were probably a waste of money. Once you have algae, a simple "shock" won't do it, and algaecides do not kill algae. You'll want to perform a TFP 
