Makai

I like the Hanna Digital PH and Temp. probe. You can get one on ebay for $69.00 and buy the ph calibration fluid and storage solution for a few dollars more. I think it works well. Model #H198128 Pam

I might be interested in a group buy if someone finds a good place to order and is interested. I could use some MH 250 DE bulbs. I understand that Marine Depot will price match prices on everything they sell. -Pam