The hammer I got from
@Invictus had a couple heads that were acting weird so I pulled it out. Same symptoms as the others - polyps not extending and tissue starting to come off the skeleton, but no obvious brown jelly.
I put the hammer in a Tupperware container and let it sit overnight. I noticed the next morning that the heads that were acting funny were spewing out brown goo, where the normal heads were not, see photo below.
I’m thinking of doing a big water change, like 75-100%, and then running some carbon for a bit to hopefully prevent any additional spread. Any downsides to doing a water change that big? Is it necessary to dose some phosphate and nitrate to get those levels close to what they were before the big water change, in order to avoid nutrient swing and/or dinos?
Any other recommendations to avoid the spread of whatever I have going on? Get a UV?