<- sand sifting star experiance, BAD i had one in my 35g for almost a year then it started to deteriorate. They feed on the fauna in the sand, (having NOTHING to do with having fish or inverts in the tank) because man oh man did i have enough fish in that tank, which is why i now have a 150g,,,
The only really important thing i noticed is that of course you need that powerhead you are getting (and maybe another one) and some more cured liverock, that one piece is probably not giving you enough beneficial space,,,and the inhabitants usually like somewhere to hide. The normal ratio is about 1-1.5 lbs per gallon of water.