Red Cottonlike growth overtaking LR

[Jfcoly]

Hi,

I have a growing problem that has prompted me to seek advice. There is a red fluffy growth spreading. It breaks up as I try to remove it which spreads it around. If anyone knows what it is and how to clean it up, please help.

Also, these little green anemones are spreading everywhere. I got two on a coral two years ago and now there are hundreds. I've injected several with kalkwasser to thin the population a couple times, but they keep spreading. Do they sting fish/corals? Should I attempt to eradicate them?

Thanks