stn/rtn

I’ve been monitoring this mushroom for about a month ive notice the top of it was turning white and I figured it was because it was bumping up against the gsp, even though im not fimilar with gsp having stinging abilities, fast forward to today its now definitely receding, i have another one on...

Hi everyone. I guess advise needed however I’ve pretty much given up on this frag, that said keen to learn for the future. This frag did fine in the tank for a while although no polyp extension at all then it started receding. However recently it has started extending very nicely but still...

Hello evrybody This is my first participation with you in the greet place I have an issue with my acropora I dont know if this is : - necrosis - bleaching - growth My water parameters : Kh : 8.3 dkh Ca : 450 mg/l Mag : 1350 mg/l No3 : 20 - 25 mg/l Po4 : 0.03-0.05 mg/l Nb : i am a...

I have a Red Sea 950 peninsula The tank is one year old today and the rock is about two years old. For the First 8 months any sps frag I put in would start to grow very fast and would do just fine, from my Montiporas to Acros nothing was dying and they were thriving. About 3 months ago my red...

Hi Everyone, Seems I have the dreaded STN/RTN disease in my tank and I'm considering options in treatment and getting back to a disease-free tank. First of all, tank breakdown including params: 32gal mixed reef biocube, no sump, no filter media whatsoever. Carbon dosing vodka. Tank 3yrs old...

Hello fellow reefers, I just purchased a variety of GSPs roughly 1 week ago. I’ve noticed my 2 new emerald crab always picking at them and wondering if he’s the scapegoat for the base loosing its mat (the purple mat encrusting the coral at the base) and then noticed my other GSP turning white...

My Christmas tree worms might have RTN or STN, what should I do?

Just came back from a 2 week work trip, got some SPS that have been in my tank for 6 months that suddenly have burnt tips and some that have partially STN. Immediately ran tests but nothing standing out to me that would cause this. Trident has maintained alk, cal and mag pretty steady the...

Hello all, Apologies in advance for the long post... I'm having some issues with my SPS that have just begun in the last week or so. Details on my tank below. I have made no major changes since I've added these frags to the tank 2 months ago. Some of them looked to be coloring up a bit and...

I’m having some really weird stn issues going in in my tank. It’s a 10 gallon and has been going good for a couple weeks i’ve been having some really bad tissue loss on some sps and some lps that i have no idea what it is or what to do to treat. 1.025 sg P04 0.00 (hanna phosphate ULR) NO3 8.0...

I'm having stn on my goniopora, alveopora and now a favites. Can cyano cause this? And if so, what can I do?

I got an acro frag from a friends tank that was struggling (STN) hoping to recover it. eventually I dipped it in revive and saw dozens of small black organisms coming off. After microscopy examination, I ID'd it as Philaster guamense based on morphology and having microalgae (zooxanthellae) in...

Hey reefing fam, Wonderind if anyone has seen anything like the attached pics? It doesn't look like AEFW bites to me, but clearly something is upsetting it, and looks almost like something is eating the flesh... Not sure what though. I've dealt with red and black bugs in the past (treated...

This stuff hasn't seemed to get better or substantially worse. What can I do to make it stop? It seems to get worse then better then worse again.

I have been losing some coral now (mainly sps) since September 2022. Everything was growing great up until around September when a favia that had been growing really well suddenly just disintegrated over a week. Ever since I've lost 2 Monti caps, digis, seriatopora, pavona. Tissue receding on...

Ok so newb mistake I made, broke one of the rules. I have a 30 gal sps system (~26-27 gals) my system had been stable for the past 6 mos (big 5 alk ~9.3, ca ~440s, mg~1500, po4 ~ .05, no3 ~10 using RS PRO salt) I added 15 small frags and bigger frags (5 almost colony size) in a span of 3 -4...