Originally Posted by NarwhalLover3
I have a hob
skimmer on my ninety gallon, but recently turned it off. It wasn't properly skimming and was putting out a bazillion micro bubbles. Ever since I turned it off, there's been a light tan film on top of the water. I also noticed an almost overnight explosion of reddish/brown algae all over the sand. It looks horrible. Should I plug it back in?
Yea plug the skimmer back it. The film will impede gas exchange, with the skimmer running you shouldn't have much of a film or any film on the surface. Having a powerhead directed towards the surface will break the film if it forms and prevent gas exchange from slowing or stopping.
29g Mixed Reef, 150w 14k Phoenix MH w/ Moonlights, Reef Octopus BH1000 HOB Skimmer, Ecotech Vortech MP10es, ReefKeeper Lite (Plus), PH Probe, Temp Probe, ATO, Carbon/GFO Reactor.