its a great debate. since there easy way to test this. most planted people dont use carbon. after 2 weeks its not active any more anyways. if its been in there 2 week its basically turned into bio media. you could leave it or take it out and replace it.
its a great debate. since there easy way to test this. most planted people dont use carbon. after 2 weeks its not active any more anyways. if its been in there 2 week its basically turned into bio media. you could leave it or take it out and replace it.