if posible that coral start to die in my tank only in two days?? or was sick already i dnt have yuma but have like 4 ricordea florida hammer duncan zoas green polyps all in good shape ...
they told its was my fault because i put the yuma in the sand bed without shade and they can start bleach right away... it is true that i have 4bulb t5
Was it bleached when you bought it? Ricordeas are low light. But i never had one bleach before. I had other corals which took more time than that to bleach, but i never had a soft coral bleach before. Your nitrates are high but i have no idea if that in combo with lighting is the cause of bleaching it depends on what if looked like when you bought it.
check the first picture i bought the coral at 6 get home at 9 at 10:30 after aclimatTion took this pcicture... i have t5 4 bulb 2 blue 1 pink 1 aquablue special