hello again. i was hoping any of you could help me figure out how to build a skimmer for my 10 gallon tank and 10 gallon sump. i left for about ten days and i noticed dirty bubbles on the surface. i figured i better get a skimmer fo rit. my problem is that all the plans i fond seem to build really big skimmers. i was wodering if i can modify the plans to a smallwer size or should i just buy one? thanks again.