I have the same issue in my tank, BGA. this may sound like a stupid question. So I would need to dose H2O2 at 2ml/g. If I have 72 gallons, that means I need to dose 144ml of H2O2? That seems like a lot. Or do we mean 2ml maximum dosage? Thanks in advance.
~144ml would be the maximum that you would want to use at any one time. As you are spot treating, just keep count of how many syringes of h202 you use and multiply by the volume of the syringe. Given a 5ml syringe (easy to come by) about 28-30 syringes at one time would be the max you would do.
Yeah, you could dump 144ml in to your tank as a major "nonspecific" dose. I wouldn't do it with inverts in the tank, though. And it can wipe out your fish by burning their gills, especially if you pour it over them. If you use the filter flow to direct the solution over plants/rock with slime, though, you can wipe out a bunch of BGA at once. H202 is cheap...
Like most "additives," h202 can hurt fish and inverts, and there are plants such as anacharis (egeria densa) that it will "melt." If you use it, there are risks. Read everything you can find on it and try to know what you are doing, before you use it.
Experience is a wonderful teacher, but the lessons are sometimes painful.
Well other than a good clean and making sure my water spec is ok i've done nothing to treat this so far and 10 days after my last water change there's barely even a trace of it if anything at all. I'm going to hold off doing anything major at the moment as I seem to be on top of it.
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