yeah it's weird only a couple of bits, could have been that sudden temp spike but not convinced I've given the tank a good blast with a turkey baster last couple of days, done a manual water change in addition to the auto one so will see how it looks. Got some KCL coming tomorrow so I will probably chop a couple of colonies dip them and reglue them tomorrow see how it goes from there. Try not to be miserable in the next video, probably only guy on the planet who comes back from the maldives moaning.