frnchjeep;1095445; said:Nice sump. It is very organized. I noticed that you keep all the bio-media submerged. Is there a reason for this? I have heard of this before, but I never knew why. I keep mine half exposed to air.
UGF's work (though not ideal) and they are completely submerged. In most cases (IMO) there is plenty of agitation in the overflow to provide plenty of oxygen for the Bacterias. Technically if you keep it half exposed, you will wind up with dry spots which will be useless.