The weirdest thing, I looked at the zoas I saw our angel fish munch on (I swear I watched him eating/nipping at the stringy part around the outside of the zoa) and they are all open and looking fine????? This is a good thing but I don't get it.

Anyone have any type of an explanation?
BTW (off point) I run one 250W MH HQI over my 30g cube tank.