Can dino kill corals overnight like this???

Hmmm.

Dino Is snotty, it grows quickly during the photoperiod.
I am inclined to think nano instability in chem.
100% dino. It was brown strands growing off the glass and corals with bubbles at the end. Brush it off and its back within a few hours.
I would hope its not instability. I religiously test my main perameters. The only ones that have gotten bad are nitrate and phosphate dropping
 
100% dino. It was brown strands growing off the glass and corals with bubbles at the end. Brush it off and its back within a few hours.

Ok

Stop water changes. Dose nothing, remove carbons. Turn off lights, manually remove dino daily, let settle and clean mechanical filtration daily for 4 days.
If pH is chronically below 8 take measures to increase that value.
I have never had dino kill corals, fish or inverts over night.

JM2C

Good luck. :-)
 
Ok

Stop water changes. Dose nothing, remove carbons. Turn off lights, manually remove dino daily, let settle and clean mechanical filtration daily for 4 days.
If pH is chronically below 8 take measures to increase that value.
I have never had dino kill corals, fish or inverts over night.

JM2C

Good luck. :)
If I stop dosing how will I keep my alk in line? I lose like .6dkh daily
 
If I stop dosing how will I keep my alk in line? I lose like .6dkh daily
Your corals and coralline are going to decrease their consumption during a black out. I used Kalk during black out to raise pH but that in it's self can be very problematic in a 10 gallon tank. If you have not used Kalk do not attempt this.

Someone is going to come along and suggest a "rip cleaning". Or dosing bacteria in a bottle ( which I support) MB7 and such. Increasing N/P levels, easy enough, feed more skim less.

Every time my tank showed dino I was dosing too much amino acids or other coral foods. I do not dose either any longer.
 
When dinos are settling on corals - even a small amount, sometimes the corals die very quickly, yes seen overnight tissue death in dino threads before.
I can't say what the mechanism is. Too fast for nutrient starvation. Toxins maybe, but then a lot of flow and GAC ought to put a stop to it, but it sometimes doesn't. O2 depletion/suffocation at night? maybe.
None of those seem all that likely to explain such rapid tissue loss....
 

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