What CA reactor?

Im planning on buying a ca reactor any recommendations? I was looking at the knop c reactor, supposedly its 40% off. How long does the media last? The co2?

Thanks

 

I am using a My Reef Creations Reactor model Cr-2 I have no complaints with it.
Check it out here.

MRC--Standard CA Reactors

 

Whats the upkeep about on a ca reactor?

 

How does the reactor know when to add the calcium into the water?

 

That would depend on the size of your system, the amount of coral,clams, etc. that use up the calcium in your system. I have a 10lb co2 tank and I would guess it will last approximately 1 year before needing refilling. the ARM reactor media is around $18.00 per 1 gallon, It takes about 1-1/4 gallons to fill both chambers. So 2 gallons should last you at least as long as the co2. This is only an estimate.
You will also want to invest is a PH controller. John

 

That is something you regulate.
This may explain some.
My Reef Creations--About Calcium Reactors

 

Thanks, I read that article already but dont see anthing that explains how does it know how much to let out of the reactor into the tank.

 

This is a pdf of the instructions for the reactor.
http://www.myreefcreations.com/instructions/Calc Setup.pdf

 

This may also help you out.
A Guide to Using Calcium Reactors by Simon Huntington - Reefkeeping.com

 

Ok that cleared some things up. Another question what are the advantages of running a ca reactor and not a nilsen reactor (I think its a kalk reactor)?

Thanks alot for your help and for replying.