On what do you base the assumption that bad bacteria is the cause of his STN?Bad bacteria is the cause, but not the root. Stirred up a DSB lately? Carbon dosing along with a bio pellet reactor? Do you think your tank has swung to overly bacterial?
This is a more plausible reason (although very unlikely the actual problem).Their conversations revolved around guys stirring up DSB's which resulted in a bacterial bloom and STN (across the board). So it's not bad bacteria per se, but too much of it. So, that and the bacterial driven systems of this era seems to provide a commonality with people's experiences.
Any temp swings? Are u using any kind of controller that can log it that was my problem twice with stn . Also have u checked for stay current ? If your water checks ok with a proffesional test like that u obviouslly have a issue thats not water quality least im guessing that test says your good i cant read it lol to many number for this idiot lol. In my yrs ive kept sps my stn issues were always temp related took me a month and breaking down my tank to figure it out every time i checked temp it looked good go to find out the lights kept temp good during day but was dropping 6 degrees at night due to a faulty heater my dumb azz only ran 1 heater and was cheapo . Any ways few more thing u can check hope u figure it outI use red sea and API test kits. I did the test mainly for testing for heavy metals, but the test shows 0. Which is good and rules out heavy metals what is causing STN in my tank.
I still don't know whats causing the STN on most of my corals, maybe its bad bacteria?
Thats a tough one with the list of good/bad corals. Usually if it was a "water too clean" issue you would see the lobo and zoas go south along with the acans. A few of the corals you listed (acans, monti, ORA Green Planet, and SSC) are notorious for not doing well when NO3 and P04 are zeroed out.No temp swings, I use an apex controller. Alkalinity stays between 8.6-9, salinity always 1.025, cal is 480, N03 is 0, PH 8.4. I was using bio pellets but took it off about two weeks ago.
I don't have a DSB, its almost BB tank. For flow I use a RW-15 and Maxspect Gyre XF150 with Gyre Interface module. Salt mix I use is Tropic Marin Sea Salt.
The few of the corals that are doing great are: UC Shortcake, ORA "Tricolor" Valida, Leptastrea, Hammer, Lobophyllia, Zoanthid, Ricordea Yuma.
The some of the bad ones are: all of my 40 acans, Duncan, candy cane, Monti, ORA Ant, Pocillopora, ORA "Stuber Staghorn", ORA "Green Planet Acro", Strawberry Shortcake.
Do you have any algae issues? If not I would also considering some amino acid supplement as well as a more particulate focused food (LRS Reef Frenzy, Rods, etc.). What type of lighting are you using? Have you made any lighting changes recently?I also stop using GFO for now just to see what happens to the corals. What hurts me the most is losing my acans because most of them are rainbows.
You obviously run a tight ship with all your params. I thought you had mostly delicate SPS across the board. The ailments do not seem to correlate between delicate vs hardier species. Quite a bit of contrast between a Duncan, Acan and a Monti all having problems while some delicate acros are doing well.No temp swings, I use an apex controller. Alkalinity stays between 8.6-9, salinity always 1.025, cal is 480, N03 is 0, PH 8.4. I was using bio pellets but took it off about two weeks ago.
I don't have a DSB, its almost BB tank. For flow I use a RW-15 and Maxspect Gyre XF150 with Gyre Interface module. Salt mix I use is Tropic Marin Sea Salt.
The few of the corals that are doing great are: UC Shortcake, ORA "Tricolor" Valida, Leptastrea, Hammer, Lobophyllia, Zoanthid, Ricordea Yuma.
The some of the bad ones are: all of my 40 acans, Duncan, candy cane, Monti, ORA Ant, Pocillopora, ORA "Stuber Staghorn", ORA "Green Planet Acro", Strawberry Shortcake.
I do have some algae issues but once I switch to Tropic Marin Sea Salt most of it is gone now. I do use an amino acid supplement (two little fishies). My lighting is leds, ocean revive Arctic-S026, no lighting changes.Do you have any algae issues? If not I would also considering some amino acid supplement as well as a more particulate focused food (LRS Reef Frenzy, Rods, etc.). What type of lighting are you using? Have you made any lighting changes recently?