[Ok I am looking for a skimmer for a 46 gallon bowfront. However should I run a skimmer during the cycle or not. The first tank that I set up I didn't however that was a FOWLR. This tank will be a reef tank. I will be cycling the tank for 6 weeks before adding anything period. Then I will add a clean up crew. I was thinking of holding off on the skimmer until I build my sump/refugium. But this is where my problem lies. The space I have in the cabinet will only allow a sump/refugium that is only 10" wide. I am still designing and rethinking how I am going to do this part. The original design I had was a 30"LX10"WX20"H with a HOB skimmer. I know that an in sump skimmer is better but not much room to work with here. Any one got any designs handy.]