Ca Reactor CO2 Overshoot w/Pinpoint

ppurcell · 10/21/2006, 08:37 PM

I just installed my first calcium reactor (DIY) on my tank today and I am noticing that with the Pinpoint pH controller, that even after the controller shuts off the solenoid that it continues to bubble for a long time. I am wondering if perhaps the solenoid isn't sealing (I bought it used). How long do they usually continue to bubble after shutting off? I am bubbling at about 30BPM.

Also, what is the typical minimum range on the Pinpoint? The tightest I can get mine to go is .21 So if I set the high at 6.61, the low at 6.40, my center is 6.51 to shut the solenoid off. I'm not sure how far it will overshoot so I closed the main valve on the cylindar for the night.

Hopefully, someone can give a bit of advise and I can pickup the tuning process tomorrow.

10/21/2006, 08:37 PM	#1
ppurcell Registered Member Join Date: Jan 2006 Location: Naperville, IL Posts: 2,911	Ca Reactor CO2 Overshoot w/Pinpoint I just installed my first calcium reactor (DIY) on my tank today and I am noticing that with the Pinpoint pH controller, that even after the controller shuts off the solenoid that it continues to bubble for a long time. I am wondering if perhaps the solenoid isn't sealing (I bought it used). How long do they usually continue to bubble after shutting off? I am bubbling at about 30BPM. Also, what is the typical minimum range on the Pinpoint? The tightest I can get mine to go is .21 So if I set the high at 6.61, the low at 6.40, my center is 6.51 to shut the solenoid off. I'm not sure how far it will overshoot so I closed the main valve on the cylindar for the night. Hopefully, someone can give a bit of advise and I can pickup the tuning process tomorrow.