Freshwater Apex, controlling co2 based on pH

[Gribbles]

Hello,

I currently use an apex on my reef tank and want to put one on my freshwater planted tank to control my co2 based on ph. I've used a Milwaukee and an American Pinpoint pH controllers before and did not like them - at all.

I'd like to record my pH before my lights come on and make automated decisions based on that value. Reason being: I'm actually running a freshwater planted tank and want to turn on my co2 until the pH drops by 1 full point. If this were .net or something, I'd do this:

var pHBeforeLights = phAtSpecificTime(10:00)
If (pH > (pHBeforeLights - 1) then ON

Ph changes so frequently as we all know that I want to eliminate as much of the guess work as possible.

Any help? Thanks!

 

[EugeneVan]

I have been using the Apex to control my CO2 dosing for the last 3 years. So far so good. Here is my program. I used 2 virtual outputs and an actual output to connect to my CO2 solenoid valve to control the PH 24/7

 

[Gribbles]

Beautiful tank! I've never had good luck with any of the AR species - I'm jealous!

I might have to control it like you are doing. I was hoping for something a little more dynamic with the pH values.

Do you find yourself often changing the range?

 

[EugeneVan]

Beautiful tank! I've never had good luck with any of the AR species - I'm jealous!

I might have to control it like you are doing. I was hoping for something a little more dynamic with the pH values.

Do you find yourself often changing the range?

Here are some tips that work well with my tank.

Water Temp: < 23.5 warm temp alage favor
light period : 6 to 7 hrs
start Co2 injection 1 hr and half before light turn on. Shut down Co2 1 hr before light off. The early start of Co2 is to make sure the ph drop down about 1 unit when light is on.

I used the whole family of seachem flourish by using dosing pump to dose into the water twice a day. Mine is a 110gal , if you like i can give you my dosing.

I have not change any of dosing range or ph. It take a month or so to dial in the dosing that is for sure.

 

[sark]

I have been using the Apex to control my CO2 dosing for the last 3 years. So far so good. Here is my program. I used 2 virtual outputs and an actual output to connect to my CO2 solenoid valve to control the PH 24/7

I'm gonna try this