Vernon Saunders Posted April 1, 2018 Share Posted April 1, 2018 Hi all, I got a bit of a perplexing situation. I have a 3/4" or so frag that looks like it is having issues with STN but water parameters are fine; Ph 8.1, Ammonia 0, Nitrite 0, Nitrate .5, Phosphate .25~, Ca 460, Mg 1400 (little high), dKh 10, salinity 1.026. Any ideas on how I might be able to save this coral or is it something that I will have to ride out and hope the coral recovers? Link to comment Share on other sites More sharing options...
victoly Posted April 1, 2018 Share Posted April 1, 2018 keep cutting up or superglue over the necrotic tissue. keep the parameters stable. Mg is pretty forgiving, but your alk is on the high side. Don't change those drastically, just monitor them long term and dont let them creep. Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 1, 2018 Author Share Posted April 1, 2018 The dKh is just what my mix comes to. I use the Rdd Sea black bucket. I'll do what I can with glue because I don't have fragging equipment yet since I don't have big enough frags to frag. Link to comment Share on other sites More sharing options...
Reefpuck Posted April 1, 2018 Share Posted April 1, 2018 If there was a big swing in parameters from the tank it came from to yours (I'm assuming it's a new frag?)...that could be enough for it to STN. Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 1, 2018 Author Share Posted April 1, 2018 It has been in my tank for about 1 1/2 months Link to comment Share on other sites More sharing options...
ShawnM Posted April 2, 2018 Share Posted April 2, 2018 Is it moving up or is it just from where you glued it to the rock?Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 2, 2018 Author Share Posted April 2, 2018 very slowly moving up from where I glued to the rock. Link to comment Share on other sites More sharing options...
FarmerTy Posted April 2, 2018 Share Posted April 2, 2018 Super glue above part of the live tissue to hopefully prevent the STN form continuing. Switch salt to non-pro version until your alk consumption increases on your tank. You really don't need a salt that mixes at 10 dKh currently, you could just use coralife or some other regular brand of salt that mixes at 8-9dKh... Save the pro version fro when your alk demands increase.FWIW, if it were my tank, keep PO4 below 0.18 ppm, alk below 9 dKh and nitrates above 5 ppm. Link to comment Share on other sites More sharing options...
ShawnM Posted April 2, 2018 Share Posted April 2, 2018 The frags is so small I would just wait and hopefully it is just from the glue and it heals but that is just me. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 2, 2018 Author Share Posted April 2, 2018 I will look into a different salt mix, probably go to the blue bucket. I'm hoping the frag recovers... I'm keeping an eye on it and will see if I can get some glue to help curb it. Link to comment Share on other sites More sharing options...
Sierra Bravo Posted April 2, 2018 Share Posted April 2, 2018 This is my personal experience and I don't know enough to say if it matters in your case, but I continued to have failures from the same issue until fairly recently when two things occurred: 1. Time. I finally hit where my alk, pH, nitrates and phosphates stayed reliably steady around 9 mos in. Many people believe that STN from the bottom is a symptom of alk swings, especially when nitrates and phosphates are very low. 2. Quality of frags. I stopped buying from cheapie eBay auctions and instead rely on local hobbyists (thanks Ty and Gig 'em) and the better online stores (WWC, Battlecorals, Fraghouse, Cherry Corals, Pieces of the Ocean, etc.). Starting with healthier, proven livestock makes a big difference. That being said, sometimes it just happens. "STN Happens" would probably make a good t-shirt. Link to comment Share on other sites More sharing options...
victoly Posted April 2, 2018 Share Posted April 2, 2018 10 hours ago, FarmerTy said: FWIW, if it were my tank, keep PO4 below 0.18 ppm, alk below 9 dKh and nitrates above 5 ppm. That is an oddly specific cutoff Link to comment Share on other sites More sharing options...
FarmerTy Posted April 2, 2018 Share Posted April 2, 2018 That is an oddly specific cutoff [emoji14]Just from my own personal tanks over the years, 0.18 ppm phosphates was were I would always see STN if it ever got that high in my acro tanks. Plenty of other conditions that may be specific to my own systems to possibly cause it but just a number in my head I always stay below. Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 2, 2018 Author Share Posted April 2, 2018 Ironically I did get this coral from UC live sale earlier this year the only other frag that is showing any other issues is the rainbow stylo I got from Ty at the meeting, but that's because a goby I thought died about a month ago suddenly resurfaced and half buried it where it was located and it is slowly recovering. @Sierra Bravo I agree that if a shirt was made with that saying it would sell. I will say that my phosphate measuring was using a slide color chart test and I picked a value that I thought was not above when it came to selecting a value... I want to get a hanna checker for phosphate but haven't gotten around to it yet. Link to comment Share on other sites More sharing options...
Timfish Posted April 3, 2018 Share Posted April 3, 2018 You can try 3 drops of Lugal's iodine in a syrenge with 16ml of tank water and treat it where it's sitting at in your tank. Here's a link to a thread I posted a couple years ago on treating an Acropora ehinata frag in situ. Some of the links are broken when Photo bucket stopped hositng for free but there are pictures further down the thread that show it's recovery. Link to comment Share on other sites More sharing options...
Vernon Saunders Posted April 5, 2018 Author Share Posted April 5, 2018 Looks like the STN had stopped and I have about 1/2 inch of frag left. Link to comment Share on other sites More sharing options...
stoneroller Posted April 7, 2018 Share Posted April 7, 2018 All you need is one polyp to keep it going... good luck. Link to comment Share on other sites More sharing options...
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