These Skimmers are great - sometimes too great. I have a 220 gal with a
75 gal sump in the basement below the tank. Also have a 90 gal with a
35 gal sump in the basement. I'm lucky. I run both the 5" and 4"
skimmer. It seems that each pulls different stuff. Running both for
awhile on the 220 I found some corals were not growing as they should so
I now let the litter one run but no real skimming. The larger one runs
24/7 and only to the point were very dark gunk is skimmed. You can
learn this part by watching the animals - I feed a lot 3 times a day and
have many animals in the tanks. By watching the animals and the skimmers
you should pick up a feel of how to tune the skimmers. I have very
little algae this I think is the key in ensuring the skimmers is picking
up after the ozone and uv. I have No wanted crabs (stabbed one last
night) or snails. The only real problem I currently have is finding
people in Alaska who could use some of the overgrowth of Leathers,
Colts, and waving hand Xina. If you are only pulling light brown out
there are one of two thins you can do. If you need to deep clean -
Unwanted algae you can turn the amount of flow coming out of the water
supply going into the skimmer and turn up the amount of air going into
the skimmer more bubbles less water - deep clean. If all elements are
good adjust for less air into the skimmer to the point where very little
goes into the cup. When pollutants build up the skimmer will pull it
out of the water. In the last case make sure your air stone are
functioning well.
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