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Old 03/20/2020, 01:13 PM   #1
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spscrackhead's Avatar
Join Date: Sep 2007
Location: Waddell AZ
Posts: 691
Programming my heater/ fan is seriously startung to hurt my brain...

Hey guys,
I have been working on dialing in my temp on my tank and it's starting to hurt my brain. I am FOR SURE over thinking things.
I have a BRS heater that's supposed to control to a .3 degree variance that I would like to lean on for temp control. And an apex that I would like to use as a backup/ failsafe.
And a fan to cool things off if it gets out of hand.*

Ideal temp is 78.

What should my heater and fan programming be?
A 1.25 degree variance is acceptable. And as i said I would like to rely on the brs heater for most of it. I want the apex outlet to cycle as little as possible.

hobby???? are you serious this is an ADDICTION
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Old 03/20/2020, 05:03 PM   #2
Vinny Kreyling
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Join Date: Nov 2002
Location: Miller Place, NY
Posts: 6,475
First you will have to get the heater set where you want it to be 78.
Then set the apex slightly lower to turn ON, say 1 degree.
The same with a higher temp to turn OFF.
Fans on @ 79.5
This is how I would do it.

250 gallon mixed reef, 2 Reefbreeder's Photon V 2, RD 3 Speedy 80 Watt, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.
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Old 03/25/2020, 11:40 PM   #3
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Join Date: Jun 2005
Location: 600 Ft From the Reef
Posts: 2,077
I remember reading a post on another forum forum with some users saying they cannot get the advertised .3deg hysteresis from the BRS heater. I suggest you do a search but I remember the discussion. Just keep that in mind as you may need to set it for a higher swing. (BTW I don't own one, this is just FYI)

The Optimist says the glass is half full, the Pessimist says itís half empty, an engineer only see's a glass thatís twice as big as it needs to be!

Current Tank Info: Insanely Automated Low Power Consumption 90 Gal Oceanic Bow System/Aquatronica Touch Controller/AQ Dosing Pump/AQT LEDS/AQ SMS/Seq Dart Pump/ASM G3/Ozotech Ozonizer/Koralin 1502/Chiller/Typhoon3 Ro/S.Squirt /Phos React/Rmt DSB
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Old 04/19/2020, 05:53 PM   #4
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Join Date: Jul 2001
Location: Sarasota, Florida
Posts: 288
Here is what I use for my fan in the summertime:

Fallback OFF
If Tmp > 78.5 Then ON
If Tmp < 78.0 Then OFF
If Tmp < 70.0 Then OFF

In the winter, I plug in my heater to the outlet where my fan was plugged in and adjust the programming to:

Fallback OFF
If Tmp > 78.5 Then OFF
If Tmp < 78.0 Then ON
If Tmp < 70.0 Then OFF

I will be the first to admit, I'm not the greatest programmer, but these work for me.

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