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This is true as aquatic plants eat nitratesKDS said:I’m divided on this issue. On one hand, I took the Seachem Pond Matrix out of my canisters and went with pot scrubbies. I also ditched my plan to buy biohome ultimate for my sump. But I am trying the biocenosis clarification baskets for my 210 build. It will be a planted tank so I may never truly know if the BCBs really work.
Actually, I never use carbon for tap water, and a lot of other people on here don't either. Carbon is useful for removing medications and that's about it. If your tap water is safe to drink, the only fish-dangerous thing in it should be chlorine which is what we dechlorinate for, or nitrogenous compounds which carbon isn't useful for anyway.zorianak said:Lots of people have kept some gorgeous fish and tanks healthy with nothing but an airpump and a sponge. If anything, I'm starting to get pushed away from carbon filtering because it can even take out the *beneficial* stuff from your water, such as your plant fertilizers.
That said, if you're using just tap water, I'd probably still put it through a carbon filter before putting it in your tank (not that I do this as I'm lazy), because you just about never know what your city has in their water.