rundberg26 Posted May 26, 2008 Report Share Posted May 26, 2008 hi there can anyone give me input as having our power dissconnected for 3hrs to have work done on the house i have 2 3ft tanks would the fish be o.k or would i need to apply hot water? Quote Link to comment Share on other sites More sharing options...
tHEcONCH Posted May 26, 2008 Report Share Posted May 26, 2008 Just chuck a blanket over them - they will be fine Quote Link to comment Share on other sites More sharing options...
David R Posted May 26, 2008 Report Share Posted May 26, 2008 Three hours probably isn't long enough to have to worry about the oxygen level dropping or the filter media drying out of you have a trickle filter set up with media above the water. Some fish are much hardier than others when it comes to temperature change (and other things associated with a power outage) so to answer your question accurately/safely you should tell us what kind of fish you're keeping and more about the set up. Quote Link to comment Share on other sites More sharing options...
dannybanks Posted May 26, 2008 Report Share Posted May 26, 2008 my filter is loud as and i turn it off every night from 10 till 7 and ive never had any casualties. Quote Link to comment Share on other sites More sharing options...
henward Posted May 26, 2008 Report Share Posted May 26, 2008 3 hours wont make much difference at all water will take longer to cool down Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted May 26, 2008 Report Share Posted May 26, 2008 my filter is loud as and i turn it off every night from 10 till 7 and ive never had any casualties. That would kill off the bacteria wouldnt it? Quote Link to comment Share on other sites More sharing options...
henward Posted May 26, 2008 Report Share Posted May 26, 2008 i dont think thats good if i did that my fish would be ill next morning or dead the amount of waste two 14 inch borneos and a big giant gourami would be deadly i think in a day Quote Link to comment Share on other sites More sharing options...
dannybanks Posted May 26, 2008 Report Share Posted May 26, 2008 have been doing it for two years and never had any deaths but only a lightly stocked community tank. Quote Link to comment Share on other sites More sharing options...
Dixon1990 Posted May 26, 2008 Report Share Posted May 26, 2008 Do you turn the filter off? or the airpump? Quote Link to comment Share on other sites More sharing options...
Ira Posted May 26, 2008 Report Share Posted May 26, 2008 have been doing it for two years and never had any deaths but only a lightly stocked community tank. That's because you're killing all the bacteria in the filter every night so it's built up more elsewhere. That way you don't lose any. Essentially you're making it just a mechanical filter. Quote Link to comment Share on other sites More sharing options...
whetu Posted May 27, 2008 Report Share Posted May 27, 2008 hi there can anyone give me input as having our power dissconnected for 3hrs to have work done on the house i have 2 3ft tanks would the fish be o.k or would i need to apply hot water? This depends on several things including the type of fish, the ambient temperature of the room, etc. The 'safe' answer would be to throw towels or blankets over the tanks to keep them insulated until the power comes back on. Warning! Do not put towels/blankets on top of your lights in case the power comes on earlier than expected! If the power is off for longer than expected (5+ hours) you should probably have a 'plan B' ready. Have a thermometer in each tank so you can keep an eye on the temp. Do you have another way of warming water to top up the tanks? (eg gas or wood fire) This could be important, especially if it's a cold day, an uninsulated house, or the tanks are near windows or outside walls. Quote Link to comment Share on other sites More sharing options...
FreedingFrenzy Posted May 28, 2008 Report Share Posted May 28, 2008 3 hours wont make much difference at all water will take longer to cool down Water cools fifty times faster than air. Quote Link to comment Share on other sites More sharing options...
Ira Posted May 28, 2008 Report Share Posted May 28, 2008 Water cools fifty times faster than air. Sure, if it's used as a coolant it will cool the object quicker. But that's about as relevant as how many times you can skip a rock on water in this case. More important in this case would be the specific heat, which is basically a measure of how much energy it takes to increase the temperature of the medium a given amount. Water is FAR higher than air. Obviously it's going to take more energy to heat(Or cool) 100KG of water in a 100L tank vs approx 100 grams of air. (Obviously, thermal conductivity matters too but it's not enough to change the results much) Quote Link to comment Share on other sites More sharing options...
FreedingFrenzy Posted May 28, 2008 Report Share Posted May 28, 2008 Sure, if it's used as a coolant it will cool the object quicker. But that's about as relevant as how many times you can skip a rock on water in this case. More important in this case would be the specific heat, which is basically a measure of how much energy it takes to increase the temperature of the medium a given amount. Water is FAR higher than air. Obviously it's going to take more energy to heat(Or cool) 100KG of water in a 100L tank vs approx 100 grams of air. (Obviously, thermal conductivity matters too but it's not enough to change the results much) Do you ever grow tired of proving people wrong? Quote Link to comment Share on other sites More sharing options...
Ira Posted May 28, 2008 Report Share Posted May 28, 2008 Yes, but people continue to be wrong. Quote Link to comment Share on other sites More sharing options...
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