jnet wrote:
the vids not very good but it looks like HITH unless he hass damaged himself in the night but you say its spreading.
HiTH indeed doesn't appear overnight, but develops gradually.
plus your waterparameters are good, if not to say excellent.
i cut is more likely if it turned up in one day.
Uhm, you stated EVERYTHING is at zero now???
there should at least still be some nitrates reading if you filter is working correctly.
btw if there's any decorations, that have sharp edges, it's best to remove those, before your fish hurts himself more, than he allready did.