I have a 4 tank system all plumbed together. I am noticing a little algae starting to grow in the frag tank of the system. I can isolate the plumbing and add 4ml of peroxide to the tank (40 gallon) and let it run in the tank for a couple hours and then open the valve and just release the water into the other tanks? would this help or do I need a longer "soak" time?
if it’s easy to access I would apply directly to the algae. This works much faster.