I've been trying to figure out if I need anything hardware wise besides the reefkeeper for the tank. Been thinking about getting a Kalk reactor also. Anything else that is one of those must haves for reef tanks?
With the calcium reactor you won't need a kalk reactor. If you wanted to use some kalk to bump Ph it would be much easier just to drip a saturated solution into the sump or even just pour in a gallon on occasion. I would set up the calcium reactor and wait to see if you might need to bump Ph. Another way to keep Ph up is to run the calcium reactor through an extra tube of reactor media to raise Ph. You won't know either way until you start to run the reactor and see what effect it has on the Ph.
HTH
Thanks, the tank is 48x24x18 with starfire glass.Nice start!! What are the dimensions of the tank?
I bought one of these and really like it. Actually I have one of the RKLs and one that you linked to. Liked the RKL so much that I bought the upgraded one for my sump room. Only use it to moniter PH but it should be very good at controlling the calcium reactor also.
HTH
Watch out with that lugols it's very concentrated also have your mills taken a hit from the aefw