How did you set yours up to so That? Feeding your calcium reactor with a Dos? I’m trying to get my alk swing tighter than .3.
Thanks
I have a Geo Calcium reactor running with a Kamoer pump. I have it pretty dialed in on its own such that if the CO2 is fed continuously my reactor pH does not drop below 6.75 which at this point is what my system requires.
I have the Trident setup to turn a virtual outlet on or off depending on the alkalinity measurement. Basically here is how I have it setup-
Virtual outlet called CaRx Max:
Set ON
If Alkx16 > 8.19 Then OFF
Virtual Outlet called CaRx Limiter:
OSC 000:00/050:00/005:00 Then ON
If Output CaRx_Maximum = ON Then OFF
Physical Outlet called CO2 Doser:
Fallback OFF
Set ON
If pHCaRx < 6.55 Then OFF
If Output CaRx_Limiter = ON Then OFF
If pH_DT < 7.70 Then OFF
If Output Kamoer_Pump = OFF Then OFF
If Output GEO_Pump = OFF Then OFF
Basically the way it works, if my Alkalinity is above my set point of 8.19 the CaRx is throttled by the Limiter virtual outlet. It will oscillate off for 50 min and on 5 min per hour. (My system is currently low demand so these settings work, but can be adjusted depending on demand as needed). Essentially when this virtual outlet is on, it turns off the CO2 delivery to the system.
If My Alkalinity is below the 8.19 threshold, the CaRx Max outlet will turn on and continue dosing CO2 until the next alkalinity check and act accordingly depending on new level.
You can see in the physical outlet controlling my CO2 solenoid that I have some safety lines in case the CaRx pH drops too low or the display pH is too low. I also have lines to shut it off when the doser pump and recirculation pump are off for maintenance.
This has worked out great for me even when my system was using high alkalinity. Its currently recovering from a dino wipeout and my small frags are not demanding much yet. I was also able to get rid of the DOS and supplementing 2 part using this method which for me is a better solution.
You can see here how my system behaves through out the day (the slight spike of Alk to 8.45 was due to a water change, otherwise it doesn't get higher than .38):
Here's how the pH in the Ca Rx behaves- you can see the max versus throttle behavior.
Hope this helps.