cooking corals?!

i have acan 104ac leds on my 75g tank. the problem is my corals are bleaching from the bottom up. my lights are on 10 percent whites and 40 percent blues. My water is perfect too. could there be another reason?

I know nothing about Acan lights.. But only 10% white...doesn't sound like enough!

all corals or just a certain type of coral like just acros or just acans etc..., maybe not enough light cuz the acans arent the best lights out there and 10% and 40% may not be enough

Doesnt sound like bleaching more like rtn. If they were bleaching it wouldnt start from the bottom up. You will notice the color fading all around the corals but polyps still visible

isnyc300 said:

i have acan 104ac leds on my 75g tank. the problem is my corals are bleaching from the bottom up. my lights are on 10 percent whites and 40 percent blues. My water is perfect too. could there be another reason?

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Can you tell us more!!
Are lights new like you just changed from MH Or T5's
What coral you have?
I thought the same thing when I used LEDs and turned out my Par was not enough and I happen to have chemistry problems with Alk the same time

Sounds like a swing of something.. Doubt light would do that,

if its bleaching from bottom up its receding. lighting has nothing to do with it.

Iv had the lights for a while and only the acros are bleaching. They were fine before when I had them on 70 blues and 20 whites.

Check your alk

sent feom my POS phone

fishman1069 said:

check your alk

sent feom my pos phone

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+1