Quote Originally Posted by ErikH View Post
I think skimmers are great for aeration though,
I agree. I usually have a lot of CO2 in the house so that depresses the pH. I don't go skimmerless but I leave the cup off a lot (I grow and dose phyto in large amounts and don't want to just skim it back out) which seems like a good compromise for me. I still get the surface agitation and aeration (decrease in CO2, increase pH) while keeping my phyto in circulation