Skimming Skimming in our tank is done with a CPR BakPak Skimmer.  The BakPak is great for smaller tanks, and should be used in aquariums of 60 gallons or less.  However, I have seen setups with 2 BakPaks that work quite well!  I have considered buying or building a Venturi Skimmer, but with the size of my tank, why?  I highly recommend the CPR BakPak for any small tank setup.