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What is the best dual chamber Calcium Rx for a 300 gallon system
- Thread starter ecam
- Start date
The way that I have my geo and neptune set up is with in probe in the reactor and another in my sump. The neptune is set to monitor the ph in the reactor and turn on (open) the solenoid when the pH rises to a certain level and the closes it when it drops to a certain level. I set the flow rate through the reactor and bubble rate and then adjust the pH setpoints depending on whether I need more or less alkalinity. The risk that I run is that the solenoid sticks open and coninues to melt the media and drive up my alkalinity. I set the neptune up to send out an alarm if the pH drops too low in my reactor or my sump. The repeated openning and closing puts wear on the solenoid.
I think this is why the owner at MTC doesnt recommend a probe is that you would set up your reactor so that it runs constantly with the solenoid open and you just adjust the flow and bubble rates to meet your demand. This eliminates the risk of your solenoid sticking open. You could probably have your effluent discharge into a cup and put you ph probe in there to keep an eye out for significant dips in ph and use that info to send out an alarm or close the solenoid.
I found it hard to dial in using this second approach. I think that is mainly because my tank doesnt have a high demand right now. I just have a bunch of frags.
I think this is why the owner at MTC doesnt recommend a probe is that you would set up your reactor so that it runs constantly with the solenoid open and you just adjust the flow and bubble rates to meet your demand. This eliminates the risk of your solenoid sticking open. You could probably have your effluent discharge into a cup and put you ph probe in there to keep an eye out for significant dips in ph and use that info to send out an alarm or close the solenoid.
I found it hard to dial in using this second approach. I think that is mainly because my tank doesnt have a high demand right now. I just have a bunch of frags.
It depends on what salt you use....
j/k - IMHO I really can't see any advantage / disadvantage with either, but I'm sure people will debate it for days (like which salt is best). I guess the idea is a reverse flow, is that the water column is pushed up, avoiding potential dead spots. I would bet if you got 2 reactors, filled them with water colored with dye, both would end up clear with no pockets of water. Most of the popular units use good size pumps for circulation, maybe if there was a weak pump this might happen, but over time the water will mix.
I could be missing something though... I'm only as smart as the posts I read, but if it's on the internet it must be true.
j/k - IMHO I really can't see any advantage / disadvantage with either, but I'm sure people will debate it for days (like which salt is best). I guess the idea is a reverse flow, is that the water column is pushed up, avoiding potential dead spots. I would bet if you got 2 reactors, filled them with water colored with dye, both would end up clear with no pockets of water. Most of the popular units use good size pumps for circulation, maybe if there was a weak pump this might happen, but over time the water will mix.
I could be missing something though... I'm only as smart as the posts I read, but if it's on the internet it must be true.