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degordon3000 · 07-02-2009, 12:29 PM

Thanks Steven, part of the El Natural philosophy is not to use a gravel vac and to allow the mulm to accumulate. I no longer have a gravel vac. I'll wait till my UV sterlizer is set up before I sort out the film issue.

David.

07-02-2009, 12:29 PM	#8 (permalink)
degordon3000 Junior Member Join Date: Jun 2009 Posts: 21 iTrader Ratings: 0 Plant Points: 1350	Re: Biofilm removal on surface water Thanks Steven, part of the El Natural philosophy is not to use a gravel vac and to allow the mulm to accumulate. I no longer have a gravel vac. I'll wait till my UV sterlizer is set up before I sort out the film issue. David.