eclipse's are very very poor quality IMO. I have an eclipse I use for a freshwater hospital tank(fighting cichlids) and nothing else. I really dont see much other use for it. I bought a 14 biocube to start marine. I couldn't be happier. This is 100% better IMO. If you want something compact with all the benifits of being able to do a wet/dry, fuge, sump..whatever go with a cube. Eclipse's are junk, you will never be happy with it no matter what you upgrade on it.