I’ve had these corals for 3 plus years and as far as I know I haven’t changed anything. My water parameters all seems decent. Nitrates at 5
Phosphates are 0.16
But just recently all 3 of my 5 SPS have started turning white at the base and it’s slowly spreading out towards the tips. As they are turning white brown algae is growing on them.
coincidentally, my leather coral won’t open and extend polyps and my bubble coral has regressed. All my other lps and soft corals are fine and my lettuce coral, birdsnest, and acro are fine. So confusing.
Phosphates are 0.16
But just recently all 3 of my 5 SPS have started turning white at the base and it’s slowly spreading out towards the tips. As they are turning white brown algae is growing on them.
coincidentally, my leather coral won’t open and extend polyps and my bubble coral has regressed. All my other lps and soft corals are fine and my lettuce coral, birdsnest, and acro are fine. So confusing.