I have read several of your posts regarding algaecide overdosing. I believe I overdosed my pool with dimethyl benzyl ammonium chloride (from Dupont) at the . Sep 12, 2011 - Algaecides are a liquid substance added to the surface of the pool. This chemical, however, can have side effects for both the water and . May 28, 2009 - I think I put too much Algaecide (total 2 L - 2 bottles of 1 L each) in the pool which . They are inexpensive and you get what you pay for. Jul 26, 2013 - In The Swim Pool Algaecide 60 Plus - 1 Quart . Cheap chemicals you might pick up at the local big box store (Wal-Mart, Sam's Club, etc.) . Jul 12, 2017 - Water balance scenarios and related 'side-effects', pool chemicals that should always be added . cheap-pool-shock Chlorine shock + Algaecide: Chlorine shock will disrupt the polymer chains or chemical compounds used . 95% of the time -- or more -- if your pool is green AND cloudy, it's algae. Kill it! Swimming . Overdose of calcium chloride (pool calcium increaser). Too much . (Some dealers sell cheap and coarse sandblast sand as 'filter sand'.) Overdose of . Green water or floating algae are common problems in swimming pools. Treatment can take . They are also more expensive and can have unwanted side effects. Phosphate test kits are a cheap way to test for these chemicals in your pool. Treating, preventing and detecting pool stains. . So if consumers who have been using that purchase a copper algaecide for the first time, and . per 10,000 gallons — substantially less — they may put a huge overdose into the pool. . 'It's such cheap insurance against having a finish problem and having to do warranty .