Heater Thermostat Maybe Broken?

[norbie]

Hi

I have a 200w heater on my cycling 4ft tank (approx 30 US Gallons). i have a digital thermometer and the heater keeps on coming on every now and then and going upto 27/28 C and i have it set to 24C !

I think the thermostat maybe broken

If I was to get a new heater what is the ideal wattage size for my tank? I cant see a guide anywhere

 

[tetras4me]

well i have a fifty five gallon tank and it has a 200 wat heater so for you tank i would say like 100~130 wat

 

[MHunt]

Regardless of wqhat the temperature gauge on the heater says, go off your thermometer, not the heater. Just turn it down till you consistently get the temperature you want.

 

[hoarp001]

I have a 60gallon with a 200 watt, and the tempreature is pretty consistent...

 

[norbie]

When I've moved everything across from old tank I will have a free 150w visitherm heater that I know works well.

If 150w is ok i will stick with that one.

 

[norbie]

I haven't got the heater plugged in at the moment and it's sticking at around 26C

That maybe staying like that because of the lighting though.

I have an alarm on the thermometer that will hopefully wake me up if it goes too low.