rossco's 210 gallon SPS reef

[Reefahholic]

I have the Kalk reactor plumbed in line with my ATO, so it is running multiple times a day. My overall pH was raised by .2, from a low of 7.6 overnight to 7.8 now, and a high from 7.95 before to 8.15 now.

My tank evaporates about 12 gallons a week so a little less than 2 gallons of Kalk gets added to the tank a day.

Ok, well I have mine on a pump so I can control the amount to keep a consistent/stable Alk/Cal. Did you do it this way on your 75/G?