umm im in no place to be certain but if it sat in a drained tank for a week meaning there is probably still water in the sand couldnt that water continue to cycle and the bb thats in the sand eventually just die and create sludge.
Not directly but yes, they could aid in accelerating a unicellular algae. What bacteria there was would die, producing ammonia, which along with any detritus still in the water would be great for growing algae.cipolla6;1923350;1923350 said:umm im in no place to be certain but if it sat in a drained tank for a week meaning there is probably still water in the sand couldnt that water continue to cycle and the bb thats in the sand eventually just die and create sludge.
Thought crossed my mind, but with the lack of fish and time, there shouldn't have been a large buildup of nutrients for the heterotrophic bacteria to reproduce in that kind of number.Dr Joe;1927554;1927554 said:Agreed, anything with weight should have settled, algae won't. and no one considered the probability of anaerobic bacteria build up.
Anyway, check the chemistry, see if you can get your hands on a diatom filter (or polishing pads in your filter) and clean it up.
Dr Joe
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