The Planted Tank Forum banner

1 - 2 of 2 Posts

·
Super Moderator
Joined
·
11,935 Posts
Do you want the most accurate (regardless of price), or do you want a cheap, but not particularly accurate method?

For the former, use a CO2 meter.

For the latter, use a drop checker with a 4 dkH reference solution.
 
1 - 2 of 2 Posts
Top