i would go with 1 1/2'' drain and 1'' return. on the return you could allways reduce it to 3/4''or 1/2''on the 1'' bulkhead. at least you have that option. most of the time the problem is water out not water in.
i would go with 1 1/2'' drain and 1'' return. on the return you could allways reduce it to 3/4''or 1/2''on the 1'' bulkhead. at least you have that option. most of the time the problem is water out not water in.
350 gal. 7\'x36\'\'x25\'\'tall, , 3-400w.mh-10k, 2-6\' vho actinic, 175gal.sump, 6ft. 100gal zenia fuge,calcium reactor, kalk reactor and a carbon reactor. 7\' turbofloter 5000 skimmer.