Hello,
First sorry about your monti (see message sent), but yes your alk was way to low to start. One thing I haven’t seen mentioned is that corals can handle pretty much any parameters IF those are kept consistent. It’s also not ideal to have those parameters exact daily because it can or will weaken the immunity of your corals. Any tiny change and they stress and perish.
I have this same problem in my 240, 95% corals doing great then once in a while one goes up a banana tree and nothing I can do. I have learned to not make quick changes because then I lose a lot more corals. I have the same problem with acans some on the same rock just thrive and others are struggling. So maybe it’s
@Dana Riddle time to move them. What ever your corals are use to parameter wise stick with that. Chasing number is bad and I’m guilty of it. Also running a mixed reef is much harder than a sps dominant tank etc and i found this the hard way. I would slowly raise your alk, add some carbon to get rid of anything in the water that something may have released and add maybe phosguard to bring phosphates down.
What I mention next I’ll be honest, in my perfect reef world I’d avoid it, but it saved mine. I did 60 gallons a week on my 240, and nitrates and phosphates would not even move at all. My fish consume all food within seconds and my skimmer is over rated for my 240.
I finally used Redsea nopox because it was save my tank or try this. This has worked and for the better and I have had some set backs also. One is it’s addictive to corals you can’t ever stop (Listed on Page 6) it acts similar to an opioid, or prednisone or better a benzodiazepines. Corals go into with drawls. Now I don’t suggest you run out and start this, you need to research it in depth.
It has really saved my sps, and colored them up
And my Monties and frogspawn, but eventually killed my scolys, afterburner, and my blue green hammer doesn’t like it. Some of my acans are going crazy and doing great others I can’t keep alive. Only do this as a very very last resort. I regret it but hey it was that or lose my tank. Which I love my tank dearly so I had to make that choice, but again every tank is different and responds different.
Reefing is a chess game and right now your in the mid game. Usually in chess when one thinks x amount of moves ahead they have a better end game. Anticipating what your corals move will be, should determine if knight to b4 check is a wise move. All my chalices and monties do great and I run alk at 8 calcium at 440 mag 1390, which I may increase. Normally nitrates are 2-5 some how they are ten and (I can’t find why, and ) phosphates are under .25ppm salt is 1.025. I do doze trace elements daily but prior I avoided water changes, now I’m back to 30 gallons once a week and lol still no change in parameters.
It could be a million things that caused this, it also coild
Be it just didn’t like your tank. It happens to me I hate it and but that’s the hobby. I am always here if you need something.
Sarah