Substrate under rocks or none? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 2 Old 06-05-2011, 01:01 PM Thread Starter
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Substrate under rocks or none?

I want to put a piece of driftwood in the center of my tank and carpet the bottom with J. Moss. I want one spot/area to have the gravel exposed but everywhere else I was thinking of tying the Jmoss to rocks. The question is, do I need gravel underneath these rocks or can I just put the flat against the bottom of the tank?
(note: I don't think i'll have anything but J.moss in the tank plantwise.)
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post #2 of 2 Old 06-06-2011, 09:46 AM
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Rocks can sit on the bottom of the tank, but I would recommend some fine gravel just to ensure there are no areas where fish can get in and be trapped. Food will also find its way into spaces. I find the best method is to put the gravel in, then take the rock and carefully maneuver it around, pushing it gently into the gravel.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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