Hey there, new to this forum and I'm getting ready to purchase supplies to start up my 15g nano tank and the only question I have left is which size powerhead would be best for my tank?? Koralia nano 240 or 425, or maxi-jet 295. Planning on putting live sand, at least 15lbs of LR, a couple of small fish and a little CUC. Filter will run 150 GPH. We had a 10g a few years back, but due to a big move we had to leave it behind. Hope to be more involved in the forum once the tank is up and I'm excited to get back into this hobby! Thanks in advance!