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Originally Posted by Telaverus
I think Mr. Wilson is already doing this. I think I had read somewhere that he has an airline tube threaded down through a deep sand bed (in his overflow) and doses. I may be remembering this wrong, but I'll see if I can find it.
Very interesting.
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I asked Mr. Wilson if he was using this technique; here is his response:
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No, I'm not doing this now. What you may have read is my idea of using sand in an overflow with perforated feeding tubes to add a carbon or sulphur source. You could place some NP biopellets at the bottom of the tube. Just make sure it doesn't become too anaerobic and release hydrogen sulphide into the water column.
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HighLandReefer, what do you think about a layer of biopellets at the bottom of a 6" sand bed?