To put the sand in your tank, I use a piece of 4" pvc pipe a little longer than the depth of your tank so the end is just above the water. By placing one end on the bottom glass and the other out of the water, you can then use a measuring cup to dump sand into the pipe and let it settle to the bottom without clouding your water.
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Starting fresh ... 90 gal, 40gal sump, sundial T5HO x 4, 2 x koralia 2's, ASM G1X skimmer 
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