water temp.

[sharpie]

hi-
does anyone know how i could control the water temp. in a 10-20 gallon aquarium with out spending 169 bucks :eek: for one of those digital control things?
-thanks so much

[John x jro]

u have to turn the heater down and up in small amouts till u get it at desirred temp....tehn should be fine my go up or down a little turn usually corrcts it....i suggest a digital read therometer about 15 bucks....IMO....temperature usually rises about one degree per hour

[AngelMom]

Do you have a heater in the tank? It should have an adjustment knob and should come on or go off as needed.

[sharpie]

yeah, i have a heater in the tank, but i dont think it turns off....ive been letting the heater run for a few hours then i turn it off for a few hours...is that a good thing?...the knob is turned all the way on low but the temp still rises to about 82 and i want it to stay at around 78...

[AASPBY]

Are you sure that it is the right size? What kind of heater is it? I had a TopFin heater that never turned off and almost boiled my fish! It should turn off when it reaches the temp you set it to.

[AngelMom]

If the heater isn't turning off at all, it's gone bad and you need to replace it.