sps problem

[RobNJ]

Not sure what to do, I have one piece of SPS and after several months it is turning white.

The picture with the flash make the ss look brown but it has thie amazing green glow under the halides.

Can anyone tell me what may have happened? and what I should do?

All parameters are good and in range. Tanks is up 6.5 half months

 

[DSMpunk]

I would frag off the healthy parts and try to save whats left. Also before you add the frags back to the tank, do a quick freshwater dip (a couple of minutes) in case you have a some sort of bacterial or protozoan infection.

There are a lot of reasons that corals will RTN like that. Do you have anything else in the tank that is doing poorly?

 

[javajaws]

Probably should have posted this in the SPS forum for better/more answers.

Whats your alk at and has it been stable within the last couple of months? Temp swings?

 

[RobNJ]

some temp switngs of 4 degrees but nothing out of the ordinary. alk has been stable dkh 7.5

 

[RareCorals]

check for red bugs. They are known to make sps RTN.

 

[Peter Eichler]

Well, your alk is a little low and 4 degree temp swings certainly isn't a good thing either. What about your nitrate, phosphate, and calcium levels?

 

[RobNJ]

phosphate is non-existant ever since i switched to rodi several months ago

calc 460ppm
amonnia, trites and trates 0

My sump has a ton of cheato for export and my skimmer is rated for a tank 3 times the size so keeping it clean has never been an issue.

 

[RobNJ]

Can a piece of coral with RTN on it recover? Or is fragging it the only way to save it?

 

[Peter Eichler]

<a href=showthread.php?s=&postid=8316752#post8316752 target=_blank>Originally posted</a> by RobNJ
Can a piece of coral with RTN on it recover? Or is fragging it the only way to save it?

It can recover but more times than not fragging is your safest bet.

 

[chrisl1]

It looks like it spread pretty far already, I'd frag it asap. I had the same thing happen to me about a month or so ago, I was messing with different salts , the salt I experimented with messed with my alk and calcium levels, so when I started to add baking soda to fix the alk, the sps coral RTN'ed , I fragged it, but it never survived.