How to Lower the Iron Content in Water
I know this would sound counter-intuitive for planted tanks, but I would like to know what is the best way to decrease the iron level in a planted tank. I made a massive gravel vacuuming as a solution to my algae problem (see my other thread) and a lot of the laterite granules have come up at the top of the substrate. And I think this is the one causing the increasing iron level in my tank. When I last tested the water, the iron level is around 6 ppm. I would like to keep it at 0.2 ppm.
Appreciate all your help.