keddre Posted March 28, 2022 Share Posted March 28, 2022 This is more of a theoretical question then a "I want to do it question". I was looking at my activated charcoal that I haven't used on up-teen years and wondering if it would work as a fertilizer or laterite replacement in a planted tank? My thought process is that at the beginning it would add zero value, but as it absorbs stuff in the water, it could become a thing that roots could latch onto the pull that "stuff" out; more of a long play, and not an instant benefits thing. Has anyone played with this idea before? My understanding is this is how clay works, so it would be the same concept with a more expensive item. 1 Link to comment Share on other sites More sharing options...
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