anyone have any luck stopping rtn?

[jjoos99]

Over the last week I have had several nice pieces rtn. Just wondering if anyone has been able to figure out why theirs was rtn and stopped it. The 3 pieces that have been effected so far have lost some color over the last couple of weeks ( turning white some) and then it starts. I completely have lost my orange passion, my raspberry lemonade is currently 90% gone and tonight I am seeing rtn on my orange crush. At first I thought it was my new lighting but tonight a frag of pearlberry that has been in my frag tank for the last week or so and doing well is completely white, totally different lighting. All my parameters are good. I havent added any new corals and the only other thing I have done lately was a treatment of chemiclean about 3 or 4 weeks ago. Making water now for a large water change tomorrow. Very sickening watching them die for no reason I can pinpoint. Just when you think everything is doing well and sh_t hits the fan.
thanks
Jeff

 

[Pife]

Did you just change gac or gfo?

 

[PedroMurcia]

Some metals, such as copper, do not kill at once, nor all alike sps. Could be an option to value.

 

[markalot]

Could the chemiclean treatment have spiked PO4 or nitrates due to cyano dieoff?

 

[K.C.]

Any change in SG ?

 

[jjoos99]

I did find my sg low at 1.20 which I fixed but have experienced rtn since. I did also see my phosphate rise to .2 which I also was able to bring down. I might have brought it down too fast and too low. I dont see any new carnage today and have about 80 gallons or water ready to change when I can get the temp up on the water. I dont use gfo in my system but did add some carbon after it started and wouldnt stop. I am thinking it has been a combination of things and hope the water change will help get things under control. I am alittle hesitant to use the chemiclean again though. Might be a coincident but seems to maybe be the start of it all.
thanks for the support
Jeff

 

[itz frank]

You stated you corrected the SG? How long did you take to bring it up to normal levels?


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[K.C.]

I did find my sg low at 1.20 which I fixed but have experienced rtn since.

There's your problem. The RTN can start a day or a week or two after you've corrected the SG.

 

[jjoos99]

I raised the sg over a two day period. I didnt notice the low sg until after testing to see what might be causing the rtn. I hope things settle out soon. so far I only have one total loss and it was of course my prize piece.
Jeff

 

[Coralmassa]

I had a bunch of frags doing well, when I tested po4 and found it at .25, so I changed the gfo and took it down to zero over two days,bat which point every single sps frag began to stn. Didn't matter if I fragged or dipped or covered with glue,nthey all just went. I did post on here a little while ago that sometimes I can get my stn cases to stop when I put the frags in the part of the tank that receives direct sunlight

 

[itz frank]

It actually may have been caused by the dramatic rise in SG so quick. I guess you moved them .004 over two days. Might've ****ed them off. The low SG was probably the original cause.


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[fishresponse]

I'm starting to see some of this myself but only for a couple corals. Seems the smoother acros are more prone to STN/RTN. I haven't been able to get it to stop. Someone mentioned using glue. Has that ever worked?

 

[Coralmassa]

I had a green birdsnest frag that started to stn from me of the tips downwards, so I clipped off the dead skeleton then covered the remaining nub with glue. Then on a different birdsnest I found out it was stning from the bottom up- the tank I bought it from was not well lighted so it was more of a rescue frag, but I covered up the bottom and a little onto the flesh with glue and eventually it reencrusted back over the glue

 

[sahin]

If water parameters are at issue or nutrient reduction method has been too agrressive ie vodka dosing, then generally putting corals into a tank with no such issues stops the tissue loss. In the same tank, it really depends on the severity of the problem; most cases with severe water quality/chemistry issues tissue loss doesnt stop. If one catches and sorts out an issue early enough, sometimes there is some tissue loss but coral recovers.