Quote:
Originally Posted by keith p 
Some one once told me to rinse sponges off with tank water, to avoide "die off" inside the sponge. Any truth to this?
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Presuming you are talking about sponges in the back I don't think you want any significant bacteria in them. The bacteria will be aerobic and the
nitrate will build up in your tank. I don't use them at all in my nano but if I was trying to use them as a pre-filter to trap
detritus I would rinse them nearly daily.
