CORAL HELP PLEASE
I have a Merulina Coral that I've had for a year. It's always shown great color
The last month it's browned out and polyps have been out quite a bit. Which is strange since its never shown much polyp extension before.
Water perameters are good nothing changed. I run prodibio and carbon and rowa.
I know it a more difficult piece to care for so looking for advise
Also it's under a brand new geissmenn 250 watt 21k halide
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