spikes

I have homed in my vinegar dosing to 60ml a day. This deals with 6 cubes a day plus some mysis rs flake and spectrum pellets. I tend to feed in the evening and wondering whether this is causing very high nutrients and low the rest of the time. I was spreading it out to 24 times a day through a...

"I have this little devil's hand frag, and a few days ago, it grew white and red spikes that are emerging from it. It's probably not the swaying tentacles since they don't move at all; these spikes resemble something else. Do you have any idea what it could be? Could they be spicules?"