Cold tank

[Dearth]

Not long after I left for work this morning I lost the power to my house for about 15 mins everything came back on except my heaters the backup somehow got unplugged and my main fried. I came home tonight to a tank that was 18c. So far everything looks alive but what are some concerns I should be watching for as I reheat the tank I currently have the water up to 24c?

I did a 20% water change and have my furnace going now as we are expected to be below 0 tonight.

[brizzo]

Cold isn't the worst thing that could happen, wait out and watch for any losses, remove from tank if that happens. Will go better than expected

http://www.canreef.com/vbulletin/sho...d.php?t=100981

[freddy]

The same thing sort of happened to me the other day,except it was my heater that quit,noticed the water was alot colder than usual,checked temp it was 72 usually it is 78-80,put in my spare,temp came back up no losses.

[Dearth]

I am Hoping for the best it's not a fun feeling coming home to something like this but I will see what everything will be like tomorrow

[kien]

It certainly isn't ideal but 18C for a short period of time is no need to panic. If you have super delicate SPS it may be an issue but with most LPS and softies and hardy SPS and fish they can handle it for a short period of time.

In June my tank lost power for 24 hours and my tank got down to 17C. What's actually more of a concern in a power-out situation is the loss of oxygen and water circulation.

[ScubaSteve]

This has happened to me a couple of times... even earlier this week when the heater in my small tank died.

Low temp for short periods isn't bad... as long as it happens slowly. Same with bringing the temp back up. As long as you're going slow, it should be fine.