Apex Dual Heater Program

[infinite0180]

I found a nice dual heater program online which alternated the heaters and kicked them both on if the temp falls too low. Unfortunately that wasnt working too well with my new tank in my basement. I have about 65 gal total water volume and two of the brs 100 watt heaters. What would happen is when the temp fell and both came on it would short cycle the additional heater and only raise the temp a tenth of a degree. I needed a solution to raise my temp atleast a half a degree. So i started thinking and this is what i came up with. Does anybody see anything wrong with my logic? Also, keep in mind that even on a hot day it appears that when one heater is on, it cant raise my tank over 79, so having fallback on for one is ok...

Heater1
Fallback ON
If Temp < 78.1 Then ON
If Time 00:00 to 11:59 Then OFF
If Temp > 78.9 Then OFF
If Output TempHighPower = ON Then On

Heater2
Fallback OFF
If Temp < 78.1 Then ON
If Time 12:00 to 23:59 Then OFF
If Temp > 78.9 Then OFF
If Output TempHighPower = ON Then On
If Temp < 70.0 Then OFF

TempHighPower
If Temp < 77.8 Then On
If Temp > 78.5 Then Off

 

[infinite0180]

@SuncrestReef

Maybe you can examine this for me!

 

[infinite0180]

This seems to be working! Would still like some feedback!

 

[ca1ore]

Seems unnecessarily complicated to me. I just use the same taxonomy for all my heaters attached to apex.

FALLBACK ON
If Temp < 78.5 Then ON
If Temp > 79 Then OFF
Defer 005:00 Then ON

Chiller set slightly higher so they don't 'fight'.

 

[infinite0180]

Seems unnecessarily complicated to me. I just use the same taxonomy for all my heaters attached to apex.

FALLBACK ON
If Temp < 78.5 Then ON
If Temp > 79 Then OFF
Defer 005:00 Then ON

Chiller set slightly higher so they don't 'fight'.

The goal is to alternate heaters...

 

[ca1ore]

The goal is to alternate heaters...

I understand that people seem to feel the need to do that I just don't see the point … just adds unnecessary complexity LOL. I proactively replace my heaters every three years anyhow, so have not seen any premature failures (which I guess is why people feel the need to alternate them).

 

[infinite0180]

I understand that people seem to feel the need to do that I just don't see the point … just adds unnecessary complexity LOL. I proactively replace my heaters every three years anyhow, so have not seen any premature failures (which I guess is why people feel the need to alternate them).

I think it just satisfies my OCD haha! What i like about this with my particular set up is its creating smooth temp curves throughout the day by leaving one heater on constantly but supplementing with the other when needed.