how long does mulm remain biologically active?
was planning on starting up a low light, non-carbon enriched tank, using turface pro league a few days ago.
got some mulm from filter pad and sponge insert from my whisper hob filter.
something came up, so i wasn't able to setup the tank.
the mulm has been in a tub of water, with no aeration, no surface agitation, for 3 days now. is it still biologically viable to use? thanks.