hello i will be buying a proclear wet dry soon but i have a couple questions first off i was going to run 1.5inch pvc frome the tank to the wetdry ..i was going to put the pvc 4 inches into the tank and use graviety to feed the wetdry will this work ????? or do i 100% need a overflow box if so can someone explain a overflow box to me ???
http://www.proclearaquatics.com/wetdry.html
http://www.proclearaquatics.com/wetdry.html
