mikol77

I changed my gravel last night, and wanted to know about how long will the old gravels bacteria culture last. I was thinking of putting some back in, in a stocking, but if its too late it will not matter. It probably is still wet not to sure, it will be about 16 hours sitting in a plastic bag.

HN1

Any bacteria that colonized the gravel should still be available if still wet and not too hot or too cold. I forget the temp range, but I believe it's roughly 60 - 90 F.

Shawnie

with 16 hours of no food, aka ammonia source, you will have some die off...I dont really know to what extent, so it depends on what you will be using it for as to how reliable it will be ..