The Planted Tank Forum - View Single Post - Dangers of ancient substrate?
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post #10 of (permalink) Old 11-21-2012, 12:14 AM
Algae Grower
Join Date: Nov 2011
Location: Huntington, WV
Posts: 111
I just logged on to ask how often people completely tear down and redo their tanks for exactly this reason. I have a 55 gallon tank with miracle gro organic potting mix topped with eco-complete. It is just about a year old and moderately planted with not very many fish. I'm redoing mine this week for a few reasons:

1- I was worried about the organic matter in the substrate
2- I was worried the plants had used up all of the nutrients in the soil/eco-complete
3- I want to do a major rescaping of the plants

So based upon what I've read here, one year is not a long time with healthy plants and regular water changes?
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