Quote Originally Posted by confusedkorean
^im still confused on the sump shit?
sump: for filteration. bactaria grows on the bio balls that changes your ammonia to nitrite then nitrate when water pases thru it. they are known for nitrate factories, therefore if you have a reef system, keep an eye on your nitrates. corals and some invertabrates doesnt torelate high nitrates. fishes can torelate high nitrates to an extent.