Large sps colony dying from the bottom?

[Aquattro]

I'd look for pests or something stinging it. Sure, large colonies can start to fade at the bottom, but not in a day or two from a healthy colony. It's location is a premium spot in the tank, lots of flow and light. I do 50% water changes all the time, so I doubt that either, and it wouldn't limit the effect to one colony. something else going on here.

[Animal-Chin]

It is located up and to the right of a huge hammer coral colony, do they every put out sweepers? I've never seen it do it but maybe they do? My galaxy coral sends out sweepers every night, could a hammer? I mean the hammer is 5 years old, I think I would have noticed by now but...

[Aquattro]

Originally Posted by Animal-Chin

It is located up and to the right of a huge hammer coral colony, do they every put out sweepers? I've never seen it do it but maybe they do? My galaxy coral sends out sweepers every night, could a hammer? I mean the hammer is 5 years old, I think I would have noticed by now but...

Yes, hammers can send sweepers quite a distance. That could do it. Also cut off a branch and dip it to see if anything comes off.

[Animal-Chin]

Cut the entire underneath off and gave the rest a good dip. Not one critter fell off so its not pests. Hopefully the stuff I cut off lives, I guess we'll see tonight. Alk is steady at 10.2 so it's not the issue. I moved whats left away from the hammer coral to see if it was being stung.

ah well, I have nice frags of it in my frag tank, I can always start over. Plus open realistate is never really a bad thing when you have a visa card...lol