Leather turning black
Just ordered online as a group buy with a friend. My corals are all doing fine despite some tank water parameter disruption. His two leathers and current leather are not doing too well - nothing fatal but the interesting part is that his bone-white leather is now turning black.
Not black spots like necrosis or a sting but black all over. It's not noticably shrivelled or stressed but just colour changed.
It seems like this is harmless and maybe a reaction to new light (Quite strong LEDs), new tank params or maybe "shedding" to grow but I thought I'd get a second opinion.
SG is 1.025 and there was recently a nano-skimmer added (do leathers enjoy dissolved organics so much that pristine water harms them?). Ammo/Nitrite/Nitrate all nil or negligible.
Photos before:
And after:
Just stress of the move/handling/environment change or something more sinister?
Not black spots like necrosis or a sting but black all over. It's not noticably shrivelled or stressed but just colour changed.
It seems like this is harmless and maybe a reaction to new light (Quite strong LEDs), new tank params or maybe "shedding" to grow but I thought I'd get a second opinion.
SG is 1.025 and there was recently a nano-skimmer added (do leathers enjoy dissolved organics so much that pristine water harms them?). Ammo/Nitrite/Nitrate all nil or negligible.
Photos before:
And after:
Just stress of the move/handling/environment change or something more sinister?