The reason I am asking is because 10 years ago I had a 29g euro show tank set up, no sump a fluval 404 I think with LR in it. And protien skimmer rated for 150g. 35p of LR.. The tank had numerous shrooms,zoo's, a devils hand,open brain,frog spawn and a torch. As for crittersI a reef lobster, sand sifting star and a healthy clean up crew in it.. That tank was perfect for 4years till I moved and sold it to a friend.. Now withe 90g is it safe to set up with out a sump or should I try to make somthing for a.sump... I am confused they say small tanks are hard to run but I had no problems with my old tank so would'nt my 90g be easier to keep up with with out a sump???
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