Put away a full keg plus two sample glasses from an indicated 21 or 22 litres. The new filter on the floating dip tube worked well and there was no clogging, with minimal sediment in the last two glasses pulled.
I’m undecided whether or not to fit a second filter to the collection jar. Standard practice ahead of cold-crashing now is to almost close the butterfly valve on the mostly spent yeast that’s collected below, so that the finishing hops don’t all fall into the same pit, and that the exposure to spent yeast is limited. This seems to work well, with any subsequently settling hops staying out of the jar and falling onto the Fermzilla’s sloping lower sides.
The upshot of this is that there appears to be some clear liquid above the yeast in the jar, and I’m wondering if I can tease out another couple of litres instead of losing between 1.5 and 2.5 litres to trub on each transfer. The answer is probably not, for what transpired to be reduced dip-tube final mobility thanks to adding the filter actually turned out to be the filter coming to rest on a bed of hops atop the butterfly valve, in which case we won’t be pulling much liquid down via the secondary filter anyway. Still, might give it a go next time around.