I have been doing mead for a few years on-and-off now, and have a few 25L batches that finished a 3 week primary and 3 week secondary ferment. There is still a tiny bit of bubbling inside, and I was going to rack it off the bentonite to a tertiary carboy to let any residual bentonite settle to the bottom again before bottling.
In the past, when I add bentonite to the must, it only takes about an hour for a thick, cloudy 1.5" layer to form at the bottom, and the rest of the must above it to become completely clear. When I raised these carboys up, they were agitated a bit, and the bentonite made the entire clear carboy cloud up. So, I left it overnight to re-settle, but it hasn't settled all, and is still cloudy. It was clear before it was hauled up to a higher height with our ratchet lifter, but the darn stuff seems intent on staying in solution.
Is there any way to force the bentonite to re-settle at the bottom of the carboy again? It's being kept at about 68 °F right now, and isn't being physically agitated.