pH pen?

[kfk29]

http://i.imgur.com/EC2iDu9.jpg

I'm thinking about getting one of these pH pens, probably the middle model. I have a distaste for the pH testing kits I've gotten in the past. Does anyone use these? What do you guys think, a waste of money? They also have a salinity pen which looks cool but is $60.

 

[Reefing Madness]

Wow, right on. Kind alike using the Hanna checker. I'd use it, looks like it'll do its job. Let us know, gotta throw down an update when you get it.

 

[b_rad_G]

Aquarium Chemistry: Measuring pH with a Meter ? Advanced Aquarist | Aquarist Magazine and Blog