Not the most precise but as a quick reference, damn handy. Fast and quick kinda, like the first time I ...... Ph has been on the struggle bus. Damn, gotta stop picking my nose with my thumb.
I’m sorry to be too direct but this is just a waste of time and money no? I usually just care about Alk, N&P. The Alk range of 5-10 is pretty much useless to me. Nitrate is somewhat useful but no Phosphate! So far, it’s essentially just a nitrate test strip.
Happy Friday and sorry again — just had to put it out there. You can ignore grumpy, old me.