Whats going on

[shannon97]

i have ? about leather corals i have a colt coral and a toadstool coral and they are dieing done had 2 colt coral that has died that i got from my son and they eas doing good in his tank.water parm are 0 on everything ph 8.3 cal 450 salt 1.024 i use ro water i have check for copper and other thing had none my lights are 400 mh on one side and 150 on the other side keep them in between both lights the corals seems to be getting smaller and smaller need help

 

[customdusty]

You might have a hard time getting help since your post is difficult to understand.

 

[davelinks]

sounds like they are stressing out under allt hat light to me or something. 400 watts can be alot for a leather depending on how you have it setup

 

[frenchie]

leathers don't need alot of light, but do need good flow in tank for proper shedding. check phosphates also, mine always have better polyp extension and look awesome when i change my media in media reactors.