unknown SPS RTN

T

toddmau5

New member
I have, well had about 12 acro colonies that were doing fine, last night they all looked ok, then this afternoon I checked the tank and most of them had started to RTN pretty bad. What really threw me off is the pulsing xenia was melted and gone. the zoa colonies havent been opening for a few days now, the pinks are opening but the rest are still closed up tight. There was a jack o lantern lepto that had very odd bleached marks on it as well. With the melted xenia I decided to do a water test.
Temp 78
salinity 1.026
PH 8.1
Ammonia 0
Nitrites 0
Nitrate 0.1
Phosphates 0
Calcium 370
alkalinity 8.4
Magnesium 1340.
The only thing that seems a little off to me is the calcium being low. Is there anything that could explain the RTN of the SPS and the melted dead xenia?
 
I would be willing to bet an alk or ph swing was the culprit. If your ph is that low during the day, imagine at night.
 
Sorry to hear. I had a similar thing happen to me due to a rusted magnet. I would recommend checking for that.
 
did the xenia go first? If so, I would tend to think that die off affected the SPS, but then .... why the xenia melt down. I had a similar think happen about 6 years ago, but i never put my finger on it, xenia melted, zoas disappeared, rics vanished .... everything was in check but to no avail. I feel your pain for sure as it is frustrating. Hopefully someone on here has some good observations from the past and can help. Alk swings for sure, but looks like your good there. If you just added like ROX carbon, maybe, but you don't use carbon. Add a fairly large dose of Amino acids, might cause diatom bloom, but will give you a few nitrates to think about.

been there done that and i didn't like it!
 
I know this probably makes no sense but every time I have used carbon ( which I don't anymore) my corals look horrible
 
The acros when first I believe. Then the xenia. Rics and the euphyllia seem to be doing ok. One head looks a little aggravated. Zoas are still ****ed. Not running any carbon yet
 
no change in lighting correct? I wish I could offer something up here because I know what frustration this is. Things going great one day, turn to sh3t the next for no reason. I recently lost a blue tort with everything, i mean everything, doing fine otherwise. No reason at all, everything else striving. Don't leave nothing unturned. I went through an issue about 8 years ago that ended up being a new bucket of salt that was "bad". Also review in your mind did you just open any new additives, although the same as the old ones you used, is the batch new? Go over every small detail, sometimes you will see some little "hint".

mike
 
Chris, from what i've been reading chlorine in water usually dissipates in 24 hours or less. Chloramines (Chlorine+Ammonia) take about a week. You're still using the brute for water changes? For your top off are you going straight from the RO unit for the frag tank?
 
Seems at a certain point every year there seems to be acro issues. I've never experienced but just from watching other people's post on the forums. I can't think of anything that has changed. A few weeks ago the ammonia started to creep up so I tested everything. Tested the salt mix, tested the ro Strait out of the unit which is reading 0 tds. Everything was clear. Added more live rock in the sump and the ammonia dropped. Since then everything has been fine. Acros were coloring back up from being browned out. The colors were getting good and then poof. No more flesh.

Liquidcache - I don't really think it's chlorine or chloramine. But there is something that seems to happen every year that no one has figure out yet. Water changes come out of the brute and top off water comes out of the ro and into a 5 gallon storage container. All sources of water test 0.
 
rogergolf66 said:
Acros bottom up or top down? Also how r montipora and birdsnest?
Click to expand...
Bottom up. Rtn seems to start at the base and spread from there. The monti turned white so I switched tanks and it colored back up pretty quick but I'm keeping a close eye on it. The birds of paradise seems to be doing fine.
 
Any bit marks on them? Just ruling things out. I wiped out about 80% of my sps with the new baby just not keeping up with water changes :( how's your maint practices Been lately? U had an ammonia issue recently? I have noticed that most times it takes 2-3 weeks for sps to either show signs of problems or improvement. Meeting that when things get better or worse you need to look back weeks at what happened not days. That's my exsperiance anyways. Could be the aftermath from the ammonia problem u had.

Roger

Roger
 
I'm pretty good about the maintenance. Usually 15% water changes every weekend. I guess the ammonia could have done it, I tried to catch it before it got out of hand, is weird that it just seems to be the acros and xenia. The xenia is the one baffling me the most, with all the stories about how impossible it is to kill it. No visible bite marks or anything.
 
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