crow dream wrote:

I am new to this group and uncertain whether you received a good 
response elsewhere a long time ago.
I certainly hope you did.

> But now after
>> replacing my heater with a themostat controlled heater i thought my
>> temperature problems were over. > But instead of the high temperatures i
>> got with the old heater------------

It sounds like the common death of a defective heater where it fails to 
shut off.


> I'm getting the temperature i want during the
>> day(maybe a little bit high the latter it gets) but during the night
>> it dropping to 77(and maybe a little lower if i would let it) and i'm
>> worried that it might drop lower. 

And this sounds like the consequences of a heater that is insufficiently 
powerful to supply enough heat when the room temperature goes down.


> Could this be that the heater is set too low and that
>> when the light kicks in it heats the water.
That is a second possibility.  Many are adjustable and have a light that 
  is visible when heating occurs.  If it is necessary for the heater to 
be on constantly to achieve the desired temperature then there is no 
margin for severe room conditions.


> The betta is not liking these lower
>> temperatures.  Any help would be
>> appreciated.
>> 
>> Thanks

You are very welcome.--
Also:  If this is a large and elaborate tank then it would be prudent to 
have one heater set to do the brunt of the work and a second one set to 
turn on at perhaps one c degree  or 2 f degrees lower-- to pick up the 
slack during severe room temperature conditions and/or in the event of 
failure of heater#1

Keep cool
New York Mike
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