fraserd Posted February 14, 2011 Report Share Posted February 14, 2011 Hi Everyone, I recently purchased a nano marine tank (approx 1 week ago) and I am having some I am having some major problems with heating in the tank. Its getting too hot, on average its 29 Celsius and it goes up to 31-32 during the day. I have tried everything to cool it down. I've tried: -taking all the pumps out and then tested them individually in a separate tank to see if one was over heating, -turning the lights off - leaving the entire top open all day and night (as well as trying to leave just the flap at the front open) -taking the thermostat out (it is still currently out) -moving the tank to other areas of the house, on difference surfaces, out of direct sun light etc.. Basically I have tired all I can think of. Can someone please help? I have looked all over the internet for solutions BUT no one has really offered anything Quote Link to comment Share on other sites More sharing options...
diver21 Posted February 14, 2011 Report Share Posted February 14, 2011 whats the temp of the room the tanks are in? if the room temp is warmer than the tank then you will have a hard time making it colder unless you get a chiller. Quote Link to comment Share on other sites More sharing options...
livingart Posted February 14, 2011 Report Share Posted February 14, 2011 yep chiller is the answer or ice paks there have been some nano chillers on trade me recently welcome to the forum you can add your location in user control panel at the top of the page Quote Link to comment Share on other sites More sharing options...
fraserd Posted February 14, 2011 Author Report Share Posted February 14, 2011 The room temp is around 21-23 so not more than the tank. do anyone out their have a cheap chiller? maybe that would be my only effective solution. Its weird I must add my flastmate has a tank in the same room (its huge 1300cm long 800cm high 600cm wide) it is fresh water (where as mine is Salt/marine) and his is always consistent at 26 (his thermometer is set at 26) and he doesn't have a chiller or anything... it is because mine is a smaller tank (40.3 cm Long 48.4cm wide 46.0cm High) or because my tank is marine/salt? Quote Link to comment Share on other sites More sharing options...
livingart Posted February 14, 2011 Report Share Posted February 14, 2011 from here viewtopic.php?f=4&t=51052 Anything on your tank will add heat to it to some degree or another. A powerhead in your tank drawing 5 watts will add 2-3 watts worth of kinetic energy to the water and 2-3 watts of waste heat. The moving water then loses that kinetic energy as friction against the walls and contents of the tank creating heat. The filter draws maybe 30 watts, the heat you feel touching the top is the waste heat that ISN'T being added tank water to cool it. That usually ends up heating the room air not so much the tank. Lights depends on what you have but assuming moderate lighting maybe 100 watts. Every little watt of light that goes into the tank and gets absorbed rather than reflected adds heat. If you have a hood with the ballasts and lights in it then you're holding in most of the 40-50 watts of waste heat from the tubes and ballasts. That heats up the air in the top of the tank and through that heats the water. It doesn't take much to raise the temp a couple degrees above ambient. Quote Link to comment Share on other sites More sharing options...
fraserd Posted February 14, 2011 Author Report Share Posted February 14, 2011 Thanks so much for help me with this! its been concerning me quite a bit, I don't want to have an unreliable tank. I think the most sensible solution would be to get a water chiller? do you know where I can pick up a cheap one? (do you have any expirence with chillers? i.e. what brand is good, what to look for etc) I have plans in a year to upgrade my tank to a 150 liter so I guess planning ahead by getting a chiller that will suit that would be sensible. Quote Link to comment Share on other sites More sharing options...
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