Thanks for your quick response and all of your info. My Xenias are looking better and better every day. I have to admit, I must be more careful with my dosing. I just finish doing a water change and re-organizing my rock I feel a bit tired due to this. Please allow me to say that this is a great hobby to have; my wife hardly ever complaints about it (except the spending of $) cause I am always at home. I never thought starting with salt water aquarium would be such a great experience. Take care and hope so see many of you on the next meeting.

Sincerely,
Fabian

:moon: