What kind of tds meter for small setup?

[johnvic]

I have 1 tak, 34 gal. So I'm making a few gallons a week, maybe 8 or 9 with top-off water. I would like to test my RO/DI water. Any advice on a good, but not over the top tds meter?

Thanks!

 

[Reef Reaper]

HM digital dm-1 dual tds meter from that fish place!