Heater

michelle 1977

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hi there just wanted some advice have just bought a 4 ft jewel fish tank off a friend but she thinks she moved the temperature on the heater but because there are no marks to tell u what the temp is set at i dont seem to be able yto get the right one mt water temp is 27 but when i turn it up or down it doest make a difference. is my heater ok or do i need a new one
 
If not already, mount the heater at an angle of about 45° thus: /

Andy
 
Why's that Andy?

Just I've got mine vertical at the mo. Am i wrong again. lol

(Was to stop plecs and Bettas laying on it)
 
Cos heat rises and this may trigger it to turn off too soon...

Dont worry i only found this out few weeks ago!
 
Copy & paste time (from my post to the same question on the 7th)...

I think all heaters with this built in thermostat design should be mounted at an angle. The thermostat is at the top of the heater. As the heater heats up the water around it will rise and if mounted vertically the just heated water will go straight past the thermostat giving the thermostat a false indication (or more importantly an unstable indication) of the temperature of the surrounding water.

It is the heat of the water of the entire tank you are trying to target & stabilize, not just the immediate locale of the heater. Also for this very reason the heater should not be placed in a stagnant region of the tank, better still in a fast flowing region. Again the the heater should be placed in the middle of the tank, not at the bottom, not at the top so that the temperature sensed by the thermostat is a true meridian.

Similar situation to having a thermostat in a house mounted above a radiator. Yes the heat you set is stable & correct for immediate area, but in the rest of the house it is all over the place. Conversely if the thermostat is one end of the room and the radiator the other, then the temperature you set on the thermostat will be a truer indication of the temperature of the room as a whole.

OK so a heater that is mounted in an area of flowing water, would I still mount it at an angle?... yes I would because this assumes that the water pump is always on - what if it breaks or you need to stop it or it gets clogged....

Hope that explains my thinking

Andy
 
What size (in volume) is your tank? How many watts is the heater? If the heater is too small, it may not be able to keep up with the temp.
 

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