A while back, I switched out my 24" 4 bulb T5HO rig for a AI Nano Sol for my 34g Solana, since then.. it seems regardless of the output settings I have my coral have all been receding except my red mushrooms.
My small rock of 30+ Dragon eye zoas is down to half a dozen that never open, my pulsing xenia is now barely 1.5" tall vs 4+, my 8 head candy cane coral is down to two but are not longer 'meaty' either, my torch coral as of this morning seems to be about half dead...
Yellow eyelash polyps went from a spilling over frag plug to a dozen, my green and red star polyps are shrinking.
Nothing on this tank has changed other than the lighting and the quantity of fish. (I had a couple jumpers)...
I started the AI at 30% output and gradually moved upward week per week to about 60%... I recently moved to 70-80% thinking I wasn't bright enough but that seems it may have done more harm than good (especially my torch).
Most of these corals like 'dirty' water, so my water changes are 5 gallons every month or maybe a little more.
I don't have any water specs for you other than my SG is 1.022 right now and the temperature is about 80F.
My LFS suggested I bring some water in which I'll be doing soon but given that everything was thriving pretty well with the T5s I can't help but point to the LEDs here...
Does any have any light output suggestions on my tank with this light or a general rule of thumb (aside from Watts per Gallon which don't apply well to LEDs)...?
I've been fighting some GHA and Cyano lately,but those are mostly under control.. this decline in my corals has been happening for months.