The ATI, view b4 purchase.
I am using the snail ph monitor for my CR personally. Unless u have solenoid, then maybe u can use the ph controller instead.
Making space for goldfish tank.
Selling some equipments here.
1) ATI BM-250 Skimmer (used for 3 months) ($580) rrp $1000 odd
ATI BM-250
2) Enaly Ozone Generator ($35)
3) Milwaukee ORP Controller-SMS510 ($150)
http://www.reefdepot.com.sg/
4) American Marine Calcium Monitor ($250)
http://www.reefdepot.com.sg/
5) Resun FR ($20)
6) Coralife UV 36 Watt ($60)
7) Water Top-Up ($50)
8) AC Fan ($15)
9) Snail Ph-999 Ph monitor ($40)
Drop me a pm.