[SouthernReefer]

my pinpoint ph controller has 2 out control outlets, one will control my ca reactor co2 seleniod, which wil turn on to raise my ph. but the other outlet. i'm not sure what to plug in? an auto water changer? only thing that i can think at the moment is a warning light, to let me know if my ph drifts too high? any ideas on what to use as a ph down device to plug into my 2nd outlet?
thx in adv.!

 

[Phantom Phish]

On mine, I use the second output for the dosing pump that feeds my Nilsen Kalkwasser Reactor/Stirrer. The other outlet controls the solenoid on my CO2 based calcium reactor, of course.

 

[SouthernReefer]

so,,, you use yours as a top-off? or part of your top-off ckt? sorry, i'm still a bit confused this early in the morning...

 

[Doug1]

^^

 

[squid]

There is a member of the reef tank that uses the PinPoint Controller/Monitor. I will send him an e-mail and ask him to read this thread. I'm sure he can help

 

[SouthernReefer]

i have my pinpoint controller up and running. i have the range set from 8.2 to 8.4. this is day 3 since i hooked up the korallin kalk reaktor and bubbled co2. the tank ph started off at 8.01, now it has drifted up to 8.21. the reef display looks great! having an auto top-off unit running off the other outlet is an easy to do thang. my evaporation rate is about 1½ gpd, since its topless, so i could have a storage tank with a weeks supply worth of water and essential elements pre-mixed and ready to go.

 

[tdwyatt]

The whole idea of using a pH controller is that it is a switch that is controlled by the actual pH of the water column. It will turn on at a particular pH (low) and turn off at another pH (high). You set the parameters to the desired pH that you want to attain. By turning on the switch (when the controller detects the low pH), you want the device that is turned on to supply whatever you are using to drive your pH up in the tank. When the powered device has supplied enough of that substance that is increasing the pH, the controller will then cut the power to the device supplying whatever is changing your water column's pH. Plugging a device that does not change your pH (like plain top off water) will not supply adequate feedback for the controller (not a significant level of pH change to cut the switch off) such that the controller would not control that device (and in the case of a top off water pump, the room would prolly get a washing from the top-off water overflow )

I.E., if you plug the top off pump in, you're going to end up with a mess.

btw, the controller will control devices up to 5 amps.

 

[Phantom Phish]

What Tom said....

To much CO2 from my calcium reactor would drive my pH down, so the solenoid from CO2 tank is connected to the controller. If for some reason I start releasing too much CO2 into the system, the pH goes down and the controller shuts off the CO2 flow via the solenoid.

The output (effluent) of my Nilsen reactor has a high pH (usually between 10 and 11). The dosing pump that feeds it is connected to the second outlet on the controller. If for some reason that pump were to fail in the on position, it would start to dump a lot of kalkwasser into my sump, causing the pH to rise. The controller should sense that and shut the dosing pump down.

And yes, I use the Nilsen in part as my top off system.

As long as the pH stays in the acceptable range (which are currently set as being between 8.0 and 8.4) both are on. Normally my pH stays between 8.20 and 8.27.

Anyway, thats how I have mine set up. HTH

 

[SouthernReefer]

tdwaytt, and phish, thanks for the info! much appreciated! all have connected right now is the ca reactor. so maybe just a warning indicator would be all that's needed if my ph drifts too high.
i would like to see a pic or schematic of how you have yours connect phantom phish, so i could copy your setup.
thx!