what he said

But seriously, I think I paid $23 for my PPM meter. Search PPM if you don't understand. This is the ultimate answer for your question.
Opie Yutts Reviewed by Opie Yutts on . Is this a good liquid bloom to use. I recently purchased "Dyna-Gro liquid Bloom 3-12-6" and was wandering if it'll do.Please reply. Rating: 5