I have a 200 watt it set St 82 my tank water stays cold
1315618
what size is your tank? I have a 300 watt in my 90 gallon saltwater . Temperature set at 78 and it stays at 78. I ran it at 82 degrees when it was cycling
1315619
What size is your Tank? Does the red light come on on the heater to show it is on when heating? I have a 75 gal. tank with a 300watt heater and it stays in the middle 70's.
186347
No, it should be fine. These heaters have an adjustable settings. I have a 300 watt for my 90 gallon fish pond and have it set at 80 degrees. It kept the water warm and prevented it from freezing during the winter.
2007392
This 150 watt will work for your tank. Most sources suggest 3-5watt per gallon. Lights create heat and regular room temp affect the waters average before heating. Mine doesn't come on much in the summer at all. If tank is on an outside wall it will be colder than the middle of your house. Same for if you live in warmer area like Texas vs michigan where it's always colder. I'm using it on a 75gal right now. Will add another in winter if it can't keep up.
1409126
I have a 750 watt. I live in mid Michigan. I have it on a timer for 12 hours at night. It keeps a open area usually about 2 feet around the heater (pond is less than 3 feet deep there) most days. When its really cold, the circle shrinks. My fish seem to do fine: I have it near the rock pile they hang out in. You could go a higher wattage or just have it run longer. I got it in 2011 I believe so this will be its 3rd winter. good luck
1952689
it uses 32.9 watts idle keeping the water hot That was tested using a watt meter
912402
When you pour cold water into the top, the tank heater draws 800 watts until the water is heated; after the water reaches its storage temperature, the"keep warm" heater draws only 44 watts. The plate on which the carafe sits is not heated in this thermal carafe model. These figures are from the manual for an earlier, non-thermal pot model, which also has a heated plate under the glass pot that draws another 46 watts. In terms of current, this unit draws a maximum of 7.01 amps on a 120 volt circuit.
876172
Resistance of the heater, R = (240 V)^2 / 5500 W = 10.47 ohmCurrent draw, I = V/R = (110 V) / (10.47 ohm) = 10.50 ampHeating Power at 110 V, P = (110 V)^2 / (10.47 ohm) = 1155 W, 21% of rated power.Normal wiring will be fine, just make sure its rated above 10.5 amp, 14 AWG or thicker should be sufficient.A standard 15 amp circuit will work, but your water will heat up slowly, 7.6 seconds per gallon per degree FahrenheitAt 240 V your heat up rate would be 1.6 seconds per gallon per degree Fahrenheit
693307
I use an Aqueon 10 w. It isn't adjustable but has kept the water at 82. I unplugged it when the weather got warmer.
627996
im using a 20 watt panel with a lawnmower battery its works fine ,havent had any extreme cold weather,but several days of overcast skies and some below 30 degrees havent had any problems
33053
I have this heater in a 1.5 gallon tank and it works perfect. I keep a temp. Strip on the outside of my tank to keep track and it's always at 78 which my betta seems to be happy with. I live in Washington and we don't use our heater so the house stays pretty cold.
1550693
I can only say that I have this in a 220 tank with canister filtration and since adding it my water temp has stop fluctuating. It now holds CONSTANT 85.5° TO 85. 3°f. Previously I had three smaller heaters and the water temps would constantly fluctuate as much as 3 to 5 degrees either way not the fluctuation is barely noticeable.
268690
I chill 50 gallons and have no problem from before chiller was 79 degrees with chiller 68 degrees the control seems to work great just set and foget it
1272947
Look at the size chart, 300-watt only good to 80-85 gallons. You would need something like 2 500-watt heaters or 1 1000-watt heater. Good luck.
391486
Heated my 36 foot trailer in November in northern Ontario. I always runv30lb tanks but I cant see why a 20 wont work. Ed
449201
I have a 46 gallon cichlid tank and I bought a 300 watt heater. With the adjustable temperature control, I am able to keep it at a steady 78.4 degrees.
1497044
The higher the wattage, the more water it can heat. As Grizwald said, 200 watts will heat a 100 gallon tank. A 300 watt heater though will not only heat 100 gallons, but it will do it quicker and with more efficiency. The 300 watt heater will also click on less often to heat the water than the 200 watt. This means the 300 watt heater most likely ending up lasting longer than the 200 watt heater, especially if used in a 100 gallon tank.
449198
A 200 should do fine for a 50 gallon. I run a 150 in my 30 and it has no problems maintaining the temp at all.