Tank temperature

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With it being hot at the moment, the water temperature in my tank has gone upto about 30 degrees, at the moment I've just got live rock in the tank as its cycling.

I havent got a chiller but i'm picking up a fan tomorrow to help with it. Should I float ice packs or RO ice cubes in the tank to bring the temp down? Don't want the critters on the rock to die off if they havent already.


Thanks

Mike

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Reply #1

Hi, Adam.

RO ice cubes is a bad idea, as they'll melt in minutes and lower your salinity.

I keep a 2L coke bottle of water in the freezer, it's at -18c. I had to use it the other day to bring my tank's temperature down, as it was nearing 27. It's usually at 26.6. With that in the tank, it dropped my 650L system by just .2 degrees and the big block of ice was warm water again, it took about 20 minutes.

So keep ice as a last resort but it's not a long term solution, as you wont' be able to freeze things fast enough to keep a sufficient supply coming.

The fan is a good idea, keep it blowing across whichever area gives as much surface area as possible, be it the tank's surface, or the sump's surface, but the display tank is usually larger.

If you've got any cover glasses or a hood on, removing it during the warm weather can help massively, obviously you'd have to do that with your fan anyway.

Invest in a temperature controller like the STC-1000, you build it into a project box and it's about £50 for all the parts. Once running, it'll cut the fans in when needed and so with the heater, so that they never reach a point where they're fighting each other, something that can happen with just a thermostatic heater and a fan.

Hope that helps, Mike.
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Adam111

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Reply #2

The tank has got a hood and I don't have a sump but I thought I could put the hood up for a while when I've got the fan running.

Would I be able to run a temp controller with not having an open tank?

Thanks for your help

Mike

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Reply #3

If you mean run a temperature controller without a fan, just the heater, it's still better than nothing, as the temperature controller gives you a more stable temperature than the thermostat inside a glass heater and also more redundancy (safety) as glass heater's bimetallic strips tend to jam on at some point in their lives and that can be a disaster.
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