yes, that helps. i will get the meter. i have well water, so no idea what is in it! if the number is high do i buy water or is there a cheap way to take the "stuff" out of the water?
i ask about the light and the edges because my space is round, and the light is - well, not round! so i am going to have some edge, i got the light that has good light (according to their chart) across the whole thing, but the front and back will have a bit that is still well lit, but not what the chart says for cannabis. im thinking of herbs for the kitchen there, i could find some that would like that light and do ok, i am just wondering if i am putting my cannabis at risk because other stuff might attract some bug or some bad thing.
thank you for the info!