I manually test for a lot of things Hanna Po4 is not that bad just have to prep before you start the ritual lol. I test for nitrates, phosphate, salt, alkalinity, calcium, magnesium, potassium, iron, Iodine and strontium lol. When I’m bored I do all of them takes me about an hour and half the Iodine and strontium are a bit annoying.
My usual readings are 0-.03
My usual readings are 0-.03