Setting up a new tank today - have one bag argonite live sand, one bag regular live sand, and the sand from my existing tank. Do I mix these all together or is it better to layer it?
I ended up mixing it all together. Sand bed is about 2". Transferred everything from the 20g into the new 60g (3/4 of existing sand, LR w/soft corals, 2 damsels). Tank looks very empty! Corals aren't really opening yet and the damsels are pretty stressed - hiding in the rock, striped one has turned dark gray. Tested and amonia, nitrites, nitrates are at zero. Ph is normal.
The two new bags of sand should be mixed, as it is advisable to have several different grain sizes for a sand bed in a reef, and the live sand from the established tank should be spread over the top of the new sand.
At only 2" of depth, I doubt it much matters. Even mixed, all is still close to the top either way. I'd have put the new down first though, then just stirred the old in a bit after adding it on top. But, again, at 2" I don't think it makes much of a difference, and eliminates the layered look.
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