Crashing...?

[TheEngineer]

I think my tank is crashing. I suddenly lost several SPS colonies while away on a trip. I've done two 10% water changes. The SPS still looked terrible but my LPS were OK-ish. My hammer wasn't happy and now it looks really bad. My acans are shriveled up now too. I have no idea what's happening...

Is my tank crashing? I'm feverishly setting up a second tank to move all of the corals out. I probably need to try and catch my clownfish too, right?

HELP!

 

[EriksOasis]

First things first what are your tank parameters?

 

[BoomCorals]

Need to check all possible parameters including salinity and temp. And also post parameters from the last time you checked and when.

 

[Palyzoa]

I agree with above posts, you need to do a range of parameter testing and start eliminating possible culprits. Start with salinity, Ammonia, Nitrite and so on...

 

[TheEngineer]

Working on it..

Temp 78
Salinity 34ppt

Got two kids solo. Once I get them in bed I’ll test alk and calc.

 

[TheEngineer]

But of background leading up to this...

https://www.reef2reef.com/threads/what-just-happened.330312/

 

[TheEngineer]

I literally just took all of my expired kits to the hazardous waste disposal day yesterday! I haven't had a chance to replace the ones I tossed. I only have alk, calc and mag left. I threw an ammonia alert badge in the tank, waiting for it to sit for a bit to see if I get a reading.

Alk 9.1 (Measured the same Thursday)
Calc 410 (Measured 420 Thursday)
PH 8.05 (Normal for this time of day)

Things that are different...

1. I took off my outside air connection to the skimmer. I was trying to back off the changes I made before the SPS all died. PH range never changed with outside air.
2. Dosed red slime remover last night. I have spirolina and probably cyano too based on the bubbles that was getting out of control.
3. I removed the carbon last night when I added the RSR.
4. Put 10 tablespoons of ROX0.8 carbon in just now in a bag. I can swap in a reactor if that's needed. Currently running UV, I can take that offline though and swap.

 

[TheEngineer]

I decided to move a few corals over to the hospital tank I setup. I figure if these few look good later today I'll move some more over.

 

[TheEngineer]

Lights are coming up... Hammer still looks bad. Acans look considerably better. Better than I expected to find.