Montipora issues problems

[vcarlyle62]

I have mixed reef 100 gallon 8 yr old tank. Last few days I’ve noticed discolorations /bad tissue areas on my large montipora.

PH 8.3
Alk 9.1
Nitrates 4.6
Phos 0.08
Calcium 490
Mag 1460
Salinity 34

Same lights , no change 4 kessil a360x on max blue
2 gyre pumps opposing ends of tanks with great flow they monti
Large cheato refugium
Skimmer
Filter socks
Run all for reef , cheato grow, and neonitro regularly
Rest of corals all look the same happy with signs of growth

Need tips if you can help , I don’t want to loose my monti, part of the family in my tank

See PICTs attached

 

[c4haskett]

Monti's are very susceptible to alk spikes and will first lose tissue in the center. It's hard to tell in your picture where the tissue is gone. Any alk spikes? Honestly, any answer here is a guessing game. I would first check for bugs/worms and then run a ICP-MS test to check your trace elements.

 

[vcarlyle62]

Alk has been pretty steady, small spike from 7.9 to 8.7 awhile back, maybe 2 weeks ago but I have had such spikes before when adjusting dosing

 

[vcarlyle62]

The spots are random over the center , kinda looks like when I had a torch coral fall on one of my other monti but no torches around this guy

 

[vcarlyle62]

If it’s from alk spike, will it recover or continue to spread ?

 

[Mr. Mojo Rising]

It still has new growth around the edges, thats a good sign.

 

[56longroof]

Is your salinity always 34? Thats a smidgen low.

 

[vcarlyle62]

Yeah, it’s usually at 34-35

 

[vcarlyle62]

My last icp was a few weeks ago and my iodine was low so I did dose a smidge of iodine but otherwise my report was pretty standard to where my numbers usually are, nothing out of ordinary in the toxic department

 

[Gumbies R Us]

How is everything else in your tank doing?

 

[vcarlyle62]

Everything else is thriving, good growth, almost too much growth, I have a mixed reef but heavy on the sps, nothing too difficult to keep happy tho, birds nest a couple easier acro, stylo, etc , a medium torch garden and multiple zoa colonies, some mushrooms and gsp on back wall, all seem happy as normal

 

[vcarlyle62]

The spots on my monti seem larger today unfortunately, tested all my parameters again today

Ph 8.3
Alk 8.8
Nitrates 5.4
Phos 0.09
Mag 1360
Cal 460
Salinity 34

 

[vcarlyle62]

I dosed a smidge of mag only today

 

[vcarlyle62]

Oh actually, I have a weeping willow toadstool that has been closed up for a couple days, he sometimes does this for no apparent reason so I didn’t think anything of it, my clownish live in him but he never cares that they are there

 

[vcarlyle62]

Everything else seems happy as can be tho

 

[vcarlyle62]

 

[vcarlyle62]

 

[vcarlyle62]

 

[vcarlyle62]

 

[vcarlyle62]