Currently i use the hagen test kits. For hardness, it works fine, but when it comes to testing nitrates, i do not like the bottle for reagent 3 (its the glass one), i just cant seem to get it to give a clean drop, it always builds up around the opening. So i fear this is greatly affecting its accuracy.
So what other brands are there that doesn't have this issue, as nitrate is one of the most important ones im using as my plant load is increasing and i adjust my EI dosage slightly to compensate every few weeks.
So what other brands are there that doesn't have this issue, as nitrate is one of the most important ones im using as my plant load is increasing and i adjust my EI dosage slightly to compensate every few weeks.