sand and gravel? - The Planted Tank Forum
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post #1 of 4 (permalink) Old 09-10-2015, 03:54 AM Thread Starter
Algae Grower
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sand and gravel?

Weird question. I have a planted 29 gallon. It's doing well but as I'm looking at it I need more substrate. It's currently natural small round pebbles/gravel. I think the plants and cories might appreciate coarse sand but I don't want to rip up all the plants that are just becoming established and invest in all new substrate.

So. Can I put sand over gravel?
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post #2 of 4 (permalink) Old 09-10-2015, 03:57 AM
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sand will sift through the gravel and end up in the bottom. That is OK, plants are OK with this, but it does not make a play area for the Cories.
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post #3 of 4 (permalink) Old 09-10-2015, 05:05 AM
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I have read that some people would push off the gravel or remove the gravel in just one area, and put the sand there. Then the cories have a spot they can play in, and it doesn't disturb too much of the rest of the tank.

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post #4 of 4 (permalink) Old 09-10-2015, 01:13 PM
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I have tried that. The sand will sift sideways and blend with the gravel. I would add a substrate divider so the sand area lasts longer.
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