Apparently I have calcium in my RO water and it always read high. I don't want to get lab grade RO water just to test for cal. If your RO water doesn't have calcium and want to give it a try. I'll trade it for sps/zoas that I don't have. It came with 26 test I believe. Theres 20 left. I'll also include a insulin syringe so you don't have to use the sh*tty one that comes with it.
Locate in Fountain Valley
PM please
Locate in Fountain Valley
PM please