How much lighting/adding sand bed?
The worst will not happen when you will put the sand in and you could do it at once. you will have a big cloud for a week but other than that evryting will go right
the ting to be VERY CAREFUL is not put out you crushed coral at once but slowly small part at time
about getting all out of the tank there no problem but it is alway better to dont play to much in the tank if you live roch are ther for a long run criptic zone have create and sponge and
other fauna take place under the rock and small cavern if you play whith the rock all those zone are change and then that good fauna
will slowly die and decompose im the tank so disturb the good balance in your tank
if you tank have less than 6 month dont worry notting realy have already settle so it will make
very small difference
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