Can we see a picture of the Palys?
If I remember correctly this is a little tank? Isn't it like 20 gallons? I would guess ANY coral the size of a football sliming in a tank that size is going to cause trouble. That's a lot of slime!
I've had a ton of zoos and Palys and have fragged a few
and I can't say I have ever had any of them slime enough that I could notice.