So, I recently had a birdsnest colony RTN overnight. No apparent causes. The colony started out as a 1.5" frag and grew bigger than a grapefruit and then bam...it melted away. All other SPS in the tank looked fine - perfect color and PE. All params were in check and no swings. The next day a colony beside of it started to RTN. I cut off the branch that was melting and the rest of the colony was fine. A monti colony that was nearby melted 2 days later. And then, random frags that had been healed for 2, 3, or even 4 weeks started going. In all I lost the birdsnest, the monti colony, and 3 or 4 frags. Everything else fared well and is still kicking like nothing ever happened.
I know RTN has been questioned for a long time and can be contributed to Alk and/or pH swings. I had neither. I have also read theories on bacterial infections causing the problems.
Any thoughts/ideas?
I know RTN has been questioned for a long time and can be contributed to Alk and/or pH swings. I had neither. I have also read theories on bacterial infections causing the problems.
Any thoughts/ideas?