What's up for my SPS?

[wzero]

My SPS doesn't look good. My water parameter is normal except I don't have good No3/Po4 test kits so might be a little high nutrition level.
What can I do for these SPS?

 

[fishdoc11]

From the pic I can see it looks like they are a maybe a little bleached or at least lightening.
Some more info would be helpfull.
What is normal parameters?
What are the specifics of your setup as far as equipment/lighting etc...?
How old is the tank?
How long have you had the corals and where did they come from?
Chris

 

[wzero]

SSB, Ca 420, 8 dKh. There's some nuisance algae.
Temperature 80~81F.
10% water change every other week.

 

[gregr]

wzero- your pictures are very big and take quite a while to load completely- would you like me to resize them?
Greg

 

[Chaotic Reefer4u]

yes, please resize them my photography professor...:rollface:

 

[gregr]

Done!

 

[otolith]

Greg, please do. I've been waiting about 15 minutes for the pics to download, and they're not even close.

edit--guess I should have hit reload first before posting. :lol:

 

[otolith]

Well, I would guess that there is too much nutrients/phosphates in the water, given the greenish base of the corals where the flesh has already disappeared. Do you use RO/DI water?

I suppose one should also consider AEFW whenever a coral looks sickly these days.

 

[wzero]

I use RO water.
I also suspect flatworm or redbug, but I don't have the experience to identify it.

 

[fishdoc11]

Yes the pic resizing helped quite a bit

What are the specifics of your setup as far as equipment/lighting etc...?
How old is the tank?
How long have you had the corals and where did they come from?

Also tests of phosphate and nitrate will help a lot in figuring out what is going on.

Chris

 

[wzero]

I think so, might be too high nitrate and/or phos.

 

[zoazoa]

Not sure what is the problem exactly. May be caused by nitrate or phospate. Or bleaching because of UV of halide. Or intensity of light is not enough. Or flow of water is not enough. Just parameter in not enough to say why sps can not go well. Anyway do not add any sps till your dead one become alive. That is the way save your money..

 

[wzero]

For UV, I have a UVA meter. The AB bulb produces extremely high UVA, I tested the max UVA right above water surface is 5000 (I forgot the unit, but the noon sunlight here is about 2000). So the UVA is twice sunlight. I use AB 250w*2 Aquaspace pendant.

 

[damienkee]

hhmmmm... i can see that from your pix, that is another 1 "big piece" is dieing too.
like others said, check your PO4,NO3...

 

[wzero]

It's very unfortunate, in China it has no Salifert kits. I only have Tetra, JBL kits that couldn't detect anything. However we can find Hanna, but Hanna is very expensive.