Sure, Mr. Aquarium, go ahead.
If a tank like this has enough plants in it, they will keep the soil fresh with their active roots. That requires maintenance, though, so my tank wound up losing a lot of plants over the years. Eventually I had too few plants in the tank to keep the soil good, so it went bad. Again, while you can get away with being very lazy with a tank like this, it won't work forever unless you work at it at least SOME.
I very highly recommend this book, by the way. You'd learn a lot of things you never knew by reading it, and not just about plants.
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