bleaching corals

[ddenora]

having some issues with a couple of my corals bleaching, have currently 4 24w t5 and a reef brite about foot in a half off the water, temps stable, alk and cal are constantly at 9 and 450. only thing i can think of is i have a asm g2 on a 60 gallon running 24/7 and i feed my fish every couple of days. thought maybe pulling to much nutrients out of the water. unplugged it for about a week now nothing getting worse but nothings getting better started feeding the fish twice a day and feeding the corals every couple of days, any advice or help would be awesome thanks!

 

[sromero287]

How old are the T5's???

 

[luxauterna]

My first thought went to the lights as well. But bleaching typically is too much light and if the lights are old that wouldn't be the case. Alk and Cal being off was my next thought, but your levels look good. Nutrients might be the kicker.

 

[twilliard]

Good idea to feed your fish more.
keep up a routine twice a day feeding. (Depending on number of fish)
let the bacterial population grow a little bit more and keep a close eye on them.
keep that skimmer running!

There is a balance and you will find it

 

[Reefing Madness]

Whats your MAG??
http://reefkeeping.com/issues/2004-05/rhf/
http://www.advancedaquarist.com/2003/10/chemistry

 

[Diesel]

Pictures would help in order for what kind of bleaching we talking about.
Can you fill in the info for us?
I know some of them you have posted already but just in case.
Just a brief thought IMO we have to look into Nutrients and flow.
Info on bulb combo might help too.

A. Total water volume ( Please include sump, etc.)

B. What are your parameters? ( CA, ALK, PO4,Salinity, etc.)

C. Type of lighting. Please include age, watts, and bulb/ballast name.

D. Filtration method (Skimmer, GFO, DSB, etc.)

E. What types of corals do you keep other than SPS?

F. How long has the tank been running?

G. What are you dosing? Dosing schedule?

H. Which brand of salt are you using?

I. What brand of test kits are you employing?

J. What are you using for CA/ALK supplementation?

K. What are you using for flow? (Pump names, how many, placement, etc.)