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Aquarium soils


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Technically, none of them need to be replaced. The reason the do get replace is because we use up the neutrients faster than they are replaced. Soils have high CEC, so, in theory, if you can balance plants and fertilizers and stocking, you should be able to go indefinetely without changing substrates. However, this is not necessarily achievable for most planted tanks, since they have so much plant mass and growth. Much more than an actual lake of river would have in such a small area.


You can add soil without tearing down the scape, by freezing the soil in an icetray and using them as root tabs.

Edited by Scapexghost
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