monti undata

[tompetty]

i have a small undata frag thats been growing nicely over the couple months ive had it. well yesterday and today i noticed the polyps arent out as much as before. i can still see them, just not as much. what could cause this to happen? there has been no changes to the tank except i changed my phosban a couple days ago, do you think the phosphates could have been sucked out too quick?

 

[t4zalews]

I'd check your alk, I believe a quick drop in phosphates lower alk.