Planted Tank Obsessed
||LinkBack||Thread Tools||Display Modes|
Originally Posted by Darkblade48 View Post
BO - EHEIM PIMP # 378-
Originally Posted by 4f1hmi View Post
You need a reference solution that will measure 4 dkH. This can either be bought, or made yourself with sodium bicarbonate.
Once you have this reference solution, using the kH test solution, it should measure 4 dkH.
However, in order to properly use the 4 dkH reference solution in a drop checker, you will need bromothymol blue (the API regular pH test kit is this chemical).