what are they, the 29g biocube says it has em?
reefkprz Active Member Nov 2, 2007 #2 its a ballast that is not integral in the tank design IE sits next to it, hangs on the wall beside it etc
its a ballast that is not integral in the tank design IE sits next to it, hangs on the wall beside it etc
sambasam Member Nov 2, 2007 #3 umm what? im so confused. so it hangs on the side. what does it do though?
