I think I've about won the battle. The visual signs of ich have almost disappeared (maybe one or two very tiny dots for the entire shoal left), the hatchets are feeding well and I've seen at least one of the two farlos actively grazing on a cucumber slice so they aren't starving after wiping the tank clean of algae.
I shall of course keep the quarantine and heat treatment going for a couple weeks minimum to make absolutely sure the problem is fully eradicated, but I believe the worst is over.
I shall of course keep the quarantine and heat treatment going for a couple weeks minimum to make absolutely sure the problem is fully eradicated, but I believe the worst is over.