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Cut the riser tube to about 3 inches and insert an air stone...best mods if you want to get anything significant. Also IIRC, there was something with how the skimmate tube was inserted in the lid that helped in producing the foam. I think I had put tape around the tube to hold it tight in the hole...thus created almost a vacuum pulling more bubbles in.
I used to be able to pull 1/2 a cup of dark skimmate a day with it, but honestly, even on its best day, it doesn't really compare to a real skimmer.
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Joey
I got my kids 529 plan invested right outside my living room wall...red house shows all.
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