corals

Can you post your Salinity, Nitrite and Ammonia test results?

I've seen a problem occur with a crack in a bulb causes it to leak UV rays which will kill corals etc.

Try doing a few water changes and run Carbon. This will help remove any possible foreign substance that may have entered your water.

Have you been dosing anything to your tank? If so what? (magnesium, iodine, strontium, vodka ? )
Are your fish OK? Are your crabs, snails shrimp OK too?

Also, can you please type in lower case if possible? It's much easier to read.

Chris

 

And also use spell check and periods: It takes a lot longer to understand when a sentence ends and what you're saying.

 

Wow man that's harsh!

-Bill

 

i would possibly go with the bulbs..are they halides??? there have been many ups and downs with ebay bulbs there are a few people here that have been burnt(pun not intended) by them.

 

It appears that Plusrite bulbs are metal halides?  And you've been using them for 5 months with no issues up to this point?

Have you moved or done anything with the bulbs that may have damaged them?  Are the symptoms the same on both sides of the tank or do they seem to be worse under one bulb or the other?
Along with the other tests - what's the temp?  Has there been a spike in the temp?
This could be from any number of things - process of elimination:
Bad bulbs
Defective heater not keeping temp steady -or- releasing current into water
Bad powerhead releasing current into water
Something dead in tank raising ammonia (like tibbs2 suggested testing)
Bad batch of salt (if salt is newer)
Bad batch of water (don't know what you use)
Contamination from you before sticking hands in tank (anti-bacterial soap, cleaners, etc.)
It would help to know as many parameters as possible with some background on how long the tanks been set up and any changes that you've made recently or anything you've been dosing.
Your results:
PH 8.3
Alk 9
Ca 480
Mg 1390
Phos 0
Could you post:
Temp
Salinity
Ammonia
Nitrites
Nitrates
And as tibbs2 asked - how's everything else in the tank?
-Eric
 

 

Obviously nothing seems out of the ordinary.

Fish and inverts are fine? 
How long has the tank been set up and how long have these corals been in it?
Any pics?
BTW - Most of us have had periods where we wanted to throw in the towel and give up - it'll be fine!
-Eric

 

Since your fish are fine, I'd guess a bulb problem. It might be best to turn your lights off until you can get new bulbs in there as corals can go a few days without light.