I have even used a timer to turn the heater on and off to keep a relatively constant temp. but I don't suggest this for tropicals as it is very tricky to regulate and you have to stay on top of it.
Dr Joe;1833624; said:I have even used a timer to turn the heater on and off to keep a relatively constant temp. but I don't suggest this for tropicals as it is very tricky to regulate and you have to stay on top of it.
its hard to say as if you just had a closed system of cold water it would take a pretty low wattage to heat with a cover and proper insulation . i had a 110 gal pond maintain 69 degrees when the area around it was zero in a green house . but if you add in wind then that can double your wattage needed to maintain the temp so the better insulation you have the less watts you need , also if you can set up 3 heaters one set for desired temp one a few degrees below and one a few more degrees below that way you only have one heater in constant use and back ups in case of a sudden temp change.Jeox;1840140; said:is there a chart for watts you need per gallon?![]()
frasertheking;1840150; said:its hard to say as if you just had a closed system of cold water it would take a pretty low wattage to heat with a cover and proper insulation . i had a 110 gal pond maintain 69 degrees when the area around it was zero in a green house . but if you add in wind then that can double your wattage needed to maintain the temp so the better insulation you have the less watts you need , also if you can set up 3 heaters one set for desired temp one a few degrees below and one a few more degrees below that way you only have one heater in constant use and back ups in case of a sudden temp change.
JLad10687;1836238; said:I dont want to hijack this thread but what about during the winter in Pennsylvania. The coldest it got this year was about 8*F I believe. Would this 1500 watt heater be enough for that?

Actually....would this thing work out ok?
http://www.amazon.com/15N-1500-Watt-Sinking-Heater-Guard/dp/B000BD8JAE
