RBTA problem?

[jcs11236]

I have had my rbta for about 2 years now. Haven't had any problems with him.
But the past two weeks he has been pooping up zooxanthellae every night once lights start ramping down. What could be causing this. He has pooped before once in a while but not every night. I also don't direct feed him so it can't be him pooping food. He hasn't moved. Same place he has been for months. Too much light? Too little light? Flow?
Any info would be helpful

 

[jcs11236]

Any ideas. Anyone experience this before?

 

[Sharkbait420]

Maybe you added something that is releasing chemicals and messing with your nem.