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Quarri

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Hello all,

I confess that I myself am not a keeper of a marine aquarium, but I am tank-sitting a couple of saltwater tanks for some good friends who are on vacation.

In the middle of the night the power went off and came back on again immediately thereafter. Because the power came on again right away, I did not think about my friends' tanks being affected; however, when I went over to their apartment a little bit ago to feed the fish, one of the tanks was fine, but the other had apparently been plugged into a circuit breaker so the power to the light, pump, heater, etc. for that tank did not come back on and had been out for at least twelve hours.

As soon as I got the power back to the tank and everything was running again, I checked for damage: the tank was at 70 degrees, the cleaner shrimp was dead (I removed it quickly), the two clownfish were groggy but seemed to perk up a little in the twenty minutes or so that I watched them, and most of the corals looked pretty unhappy, especially the bubble coral (who is pretty tightly deflated; I am not certain if it is alive or not).

My friends left me with no instructions on how to check pH, ammonia, etc; only with instructions on how to do a water change (matching salinity and temperature of the prepared water they have left for me with the water that is already in the tank). My questions are these:

Based on this (admittedly vague) information, how much of the tank's status might be from the cold and how much from the dead shrimp? (I am not certain how long the shrimp was dead, it could be anywhere from minutes to as long as 24 hours, which was the last time I fed them yesterday, at which time all were fine, before the power outage.) Should I do a 15% water change or so? The water in the tank seems pretty clear, and there is no buildup of anything unusual-looking anywhere--again, however, I don't have the knowledge of how (or even what equipment to use) to measure any substance levels other than salinity. Or should I wait until the tank warms up and see how everything is doing? I am afraid to do a water change because I fear that I could hurt everything in the tank more if I measured improperly, but I am equally fearful of leaving the tank as it is if the shrimp's (and possibly the bubble coral's) death could have imbalanced something. Which would be worse?

I apologize for the length of this post; I know next to nothing about saltwater aquariums but I am frantic to not let my friends down. If anyone could give me some advice on the best course of action to take, I would greatly appreciate your help!!!!!
 

liquid

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I would get the tank back up to temperature and see what happens. I'd also be prepared to do a waterchange. Testing for ammonia, nitrite, nitrate, etc is good and all, but in the event you do see that you have parameters out of line, you're going to do a waterchange anyhow. I would watch how things go after that and be prepared to do a couple more waterchanges. Honestly I'd do a 25% waterchange instead of a 15% but if that's what your friend recommended you do I'd stick with that. Make sure to match salinity and temperature of the waterchange water so as not to stress the tank any more than it already is. Many corals and fish can handle temporary temperature drops as long as it's not too long. If you caught it in 12 hrs or so, my guess is that things should recover. Also, is there any way you can contact your friend to let him know what happened?

Shane
 

Carpentersreef

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Off hand, I would say wait until it warms up - but you don't want it to warm up too fast, either. I don't suppose you would know the size of the tank and how many watts the heater(s) are?

Mitch
 

Quarri

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I'm afraid that I don't know how many watts the heater is...I believe that the tank is a 10-gallon one, but am not positive.

My friends are currently away on a camping trip in Florida; they have called me a couple of times, but I have no way of contacting them, as they don't have a cell phone. But they arrive home in a little over 24 hours, so hopefully they will be able to take over before things get too bad.

I am heading back over to their apartment to check and see how the tank has responded to warming up...it has been about two hours since I found the situation and gt everything turned back on.

Thanks for the advice so far! It is greatly appreciated. A little more info to follow...

Terri
 

Quarri

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I'm afraid that I don't know how many watts the heater is...I believe that the tank is a 10-gallon one, but am not positive.

My friends are currently away on a camping trip in Florida; they have called me a couple of times, but I have no way of contacting them, as they don't have a cell phone. But they arrive home in a little over 24 hours, so hopefully they will be able to take over before things get too bad.

I am heading back over to their apartment to check and see how the tank has responded to warming up...it has been about two hours since I found the situation and gt everything turned back on.

Thanks for the advice so far! It is greatly appreciated. A little more info to follow...

Terri
 

Quarri

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Apologies for the previous double post.

I have just come back from checking on the tank...After almost 3 hours, the tank is back up to 83 degrees and holding. Everything appears to be ok (to my untrained eye); the two clownfish are energetic, and all of the corals have opened back up and look to have good color except for the bubble coral, who is still almost entirely deflated (although it looks like it might have inflated a small bit from its very tightly deflated state when I first found the tank). Are bubble corals more susceptible to drops in temperature, or would its unhappiness be more likely to be from some sort of imbalance from the dead shrimp (that I removed previously)?

I did not do a water change at this point because the tank looks good overall (with the exception of the bubble coral), but I am going to go back in a couple of hours and see if the bubble coral has opened up any more. If it hasn't, should I remove it? I am afraid to touch it for fear of causing more damage, but I really don't know how to tell if it is dead or alive; I obviously don't want to leave it in the tank if it is dead, but I don't want to remove it if there is still a chance it is alive and could recover, either.

Should I go ahead and try a water change just to be safe, or let things stay as they are, since all but the one coral look to have recovered? And because the tank lights are on a timer and will be off very soon, should I do a water change while the lights are off, or should I wait until morning when the tank wakes up again?

Thanks again for any help and advice, I really appreciate everyone's time and thoughts!
 

ChrisRD

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Probably too late to be helpful now, but IMO if things have recovered well I'd leave it alone and let your friend check things over and decide what he wants to do when he gets home.
 
A

Anonymous

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I would wait also. And there is a good chance that what you thought was a dead cleaner shrimp could have been a shed skin. Unless you're positive the shrimp was complete and dead. So you might be just fine.

Let us know how it all turns out.
 

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