Thanks! With the sand in my 180 I think I am all set with that. I think the skimmer is tuned it, however I dont have much of anything for it to skim haha.Hey man off to a good start! It was nice to meet you the other day. I see you changed from your 20L idea. As said above 40b is a great starter size. Might be a little longer to get the tank established with no sand, but long term I love having bare bottom.