[I]@uchin wrote:[/I][quote="live in sw arlington close to mansfield. which test kit you use sir? said:
Go to either True Percula or Franks Tanks over in SW FW and purchase Elos Kits. You'll pay more for these, but you won't have to worry about color shades etc. Get the KH, MG and CA tests. The KH test is a breeze from blue to yellow (count the drops), the CA test goes from magenta to Blue (you count the drops). MG is a little more complicated, you do two tests, count the drops on one, then do the other, count the drops then subtract the second from the first and divide by two... the first test goes from orange to green and the second goes from Magenta to Blue.
You will want to check the following:
Alk, Ca, Mg with a good test kit, like Elos.
Salinity, you will want to check that with a refractometer, not a swing arm hydrometer.
You will also want to tell us how long you leave your lights on for and how far under the lights the corals are. Are there any other corals in the general area, if so what kind. Do you have direct flow on the coral etc.
In the meantime, I would move that coral to a shady place, under a LR overhang and give it a break from the light while you get the other things figured out. Bleaching corals can have numerous causes and its a process of elimination to determine the cause."]
Basically what he said. Pick up a good thermometer when you there as well.