Kalk Overdose

Bifferwine

New member
I had an accidental kalk overdose in my 90 gallon tank three days ago. This is the first time in 10 years that it's happened! I was so upset.

Anyways, the pH spiked to 8.8+. I added too much vinegar, apparently, which dropped it down to 7.2. DOH! So then baking soda brought it back up to 7.8 (this all happened over a period of about 3 or 4 hours). Even after adding two boxes of baking soda, I couldn't get it above 7.8. All the corals and fish were alive, but the corals were sliming all over the place and the fish were at the bottom gasping. I sucked out as much of the slime as I could with a turkey baster. I stayed up for a couple more hours just to watch everybody, and the fish slowly recovered. By this time, it was 3 am, I said, "Screw this, there's nothing more I can do tonight -- I'm going to bed."

The next day, everyone was accounted for, and I did about a 40% water change. I've been running carbon 24/7 too.

Three days later, shrimp is fine, clam is fine, two big starfish are fine, fish are fine, SPS corals are fine, zoas and shrooms are fine, urchins are fine, most of the LPS are fine, but some of the other corals are hurting. My blastos haven't fully opened since, none of my 5 euphyllias have opened since, my open brain has remained shriveled and sad looking, and the big cabbage leather has shrunk to half its previous size.

And, I've had a mass exodus of mini brittles from the rocks. There are hundreds of them littering the sandbed, struggling to stay alive. I'd never seen their bodies before -- they'd all just wave their arms around from inside the rocks. Now it's like they all decided to leave the rocks at the same time and commit mass suicide on the sand.

Water params are back to normal -- nitrate, nitrite and ammonia at 0, pH at 8.0, alk and calcium are good again.

What can I do to try and help the guys out that are suffering? Is there anything else I can do? More water changes? I'm really concerned for the corals that haven't opened up in 3 days now.

Thanks. I've never had to deal with anything remotely like this before.
 
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sounds like you did just about everything that you could do. Sounds like it is just the waiting game and from my experience what will live will live, but for some it might have just been to much of a shock to their system. Hope everything goes in your favor.
 
Here are some pics of the starfish massacre that my recent kalk overdose caused. All of these guys jumped out of the rocks and ended up on the sandbed. It's like the Brittle Holocaust in my tank! (Glass is clouded up from the overdose, still. Sorry.)

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sounds like you did just about everything that you could do. Sounds like it is just the waiting game and from my experience what will live will live, but for some it might have just been to much of a shock to their system. Hope everything goes in your favor.

Thanks. That's what I figured. But it's not what I wanted to hear! :mad2: I hate being out of control of things...
 
sorry to heat it. it kinda reminds me of when my calurpa spawned. i watched my tank die right in front of me in the middle of the night and the agony of watching years of work hang in your hands. im sure everything will slowly open back up.
 
sorry to heat it. it kinda reminds me of when my calurpa spawned. i watched my tank die right in front of me in the middle of the night and the agony of watching years of work hang in your hands. im sure everything will slowly open back up.

That's exactly how I feel. It sucks not being able to do anything about it. I'm making up more water to do another 30% change tomorrow. I suppose there's not much else I can do in the meantime. I'll just avoid the living room for the time being so I don't have to look at my tank.
 
just for future reference and for anyone else that may be reading, when you adjust Ph. it takes at least three hours for adjustments to stabilize so what this means is any time you add something to adjust your ph. you need to wait at least three hours to to make another adjustment or your just beating your head on the wall. this is why I believe you had the "Ph. bounce" that you did while trying to get it back to "normal" I know it is very hard to do when you realize what a catastrophe you have on your hands but you need to take it slow and easy with Ph. adjustments this big.

Just My two cents.
Rich
 
bummer sarah :( how are things looking? if you need to put some of your corals in a temporary tank, your always welcome to put it in my in line frag tank and come get them when your ready.
 
it is amazing how many brittles are in our tanks .other than water changes keep a large amount of activated carbon going to remove organics from the corals sliming . if you ntice the stars are dead remove so they don't polutethe tank further . fight the fight and good luck , keep us posted.
 
First let me say this is only my opinion, I'm a high school drop out, so take it for what its worth. People do more damage by panic then by just letting it ride, Fish with scratch, corals not opening, high/low pH/alk. IMO a Kalk OD to 8.8 is no biggie, Kalk adjustments don't last long, thats why you should dose continualy or at least daily. If you had observed the pH for awhile, I think you would have seen it peak and then drop back to normal or close to it in hours. If the 8.8 was going to damage in a short time frame (I don't think it would), the damage was already done and the flip back would just increace your chance of damage. Always remember "Nothing happens fast in a reef tank" unless you you push it or unexpected death/decay or overdose/feeding.
 
First let me say this is only my opinion, I'm a high school drop out, so take it for what its worth. People do more damage by panic then by just letting it ride, Fish with scratch, corals not opening, high/low pH/alk. IMO a Kalk OD to 8.8 is no biggie, Kalk adjustments don't last long, thats why you should dose continualy or at least daily. If you had observed the pH for awhile, I think you would have seen it peak and then drop back to normal or close to it in hours. If the 8.8 was going to damage in a short time frame (I don't think it would), the damage was already done and the flip back would just increace your chance of damage. Always remember "Nothing happens fast in a reef tank" unless you you push it or unexpected death/decay or overdose/feeding.

I would have to agree, if this ever happens again just take it sloooow and easy.
 
Thats a bummer....hope it all works out...i had a similar incident when one of the tikes my wifes sits threw a wipey in the tank....she pulled it out and i let the tank heal itself by kicking the skimmer to overdrive.....
 
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