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Re: [GSAS-Member] [BULK] Thick Glassy Skin
I think the film on the surface is a combo of dust, waste organics, and a
type of mold that grows on it. One good way to remove it is to use dry
newspaper and lay a sheet over the surface and slowly draw is across and out
of the tank. Do it several times with fresh paper. You can also use a
plastic container and place the rim just below the surface so you skim off
surface water. That helps but I think the paper method is the most
effective.
dave
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