Help on coral

[dirtnitro]

what is the white patch recently i found on my coral?

thanks

[iskay]

Bleaching.

[dirtnitro]

Any way to solve?

[Terryz_]

what lighting are you using and how long have you been using the light tube/light bulb..

[xaine]

And also what your tank temperature set at ?

[dirtnitro]

temperature at 27 degree with chiller TECO brand

light: G2 maxspect 160W on from 7pm to 2am ( so I can view at night) in the aftern it is not expose to sunlight and light is off

[iskay]

Bleaching causes:

Temparature swings. Usually when temperature goes above 30°C

Poor water parameters

Insufficient or too much PAR

[cedricang]

Bleaching causes:

Temparature swings. Usually when temperature goes above 30°C

Poor water parameters

Insufficient or too much PAR

+1

Good pointers bro.

Try shifting to a lower level, that may improve the situation.

[dirtnitro]

+1

Good pointers bro.

Try shifting to a lower level, that may improve the situation.

Thanks try do a WC last nite see any improvement, bt this coral have been with me for a month and there is no issue, I am wondering what is the cause, is it I just add a fiter sock to the overflow to my sump? and change the activated carbon? as my activated carbon is 2 month already. so replace with new carbon and add a filter sock to my sump. This may be the cause?

[iskay]

1 month is a very short time in terms of coral lifespan. Try moving further from your lights as what Cedric said. filter sock or carbon should actually improve your water quality. Unless they are contaminated.