Tank is 29G.... live rock was set up when tank was set up approx 8 months ago.... only thing in there is a fire fish. have not added any live rock since tank was set up. water is changed weekly with 5 gallon water changes with RODI salt water. tank currently has an aqua clear 50 HOB and with foam filter pad and purigen. ....all of this info i have said before.... the only question is.. like i asked... does a wet to dry need a protein skimmer? currently ammonia is continuing to run high.