I "always" add sand after the tank has been set up for awhile. This is my process:
Use a Rubbermaid tub
Dump 15lbs dry sand in it
Fill the Rubbermaid with fresh RODI water to cover the sand by 2-3"
Let sit for 30-45 mins stirring it up a few times
Take Rubbermaid outside
Use hose to wash the sand REALLY well, like fill it, swoosh, and dump 15 times or so
Dump out as much of the hose water as possible
Refill with RODI water, swoosh several times, and dump it off
Turn all the pumps off in the tanks
Use a plastic measuring cup (or similar) to scoop one scoop at a time into the tank
Let sit for 30 mins
Turn pumps back on keeping them away for the sand for a week or so
The Xenia would be happy pretty much anywhere (it's a weed!!), but try down near the sand at first so it gets used to the light.
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~ Mindy
SPS fanatic.
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