I don't see why it cannot be done but we usually use either gravel or soil, we don't mix them. Alternatively, you can consider adding root tabs (substrate fertilizer) in the form of tablets/capsules/sticks to fertilized your existing gravel.
I don't see why it cannot be done but we usually use either gravel or soil, we don't mix them. Alternatively, you can consider adding root tabs (substrate fertilizer) in the form of tablets/capsules/sticks to fertilized your existing gravel.
must rmbr not to add too much cause it may turn to mud. just to ask ur black quartz is the man made type?
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