Hyrdometer to use???

[canadawest]

Patrick, good idea to start with the cheap plastic type and go big only if you feel you need to.

In regards to the TDS meter, they are used to check water purity (Total Dissolved Solids) and do not measure salinty/specific gravity. I have a digital TDS meter that I got from Reefpure when I bought my RO/DI unit. Dave threw mine in with the deal, but they only cost approx $30US.

Troy, next time you're out Surrey way, or I'm out your way I'd love to check my Deep Six hydrometer against your refractometer for accuracy. I'd even give you $5 for your time and the fact you spent the $$ on the nice equipment.