It sounds sort of funny, what is "manual tester"? Aquarium fish tank drops? Do you mean one of those probes with the needle that move? Those are tricky because they are "open to interpretation" and take some getting to know. Others call them just plain inaccurate. I don't use them anymore, a digital like the Milwaukee are decent IMHO. Fish tank drops are pretty accurate but water color must me "compensated" for which leads to, again, interpretation. Perhaps others will correct me if I'm wrong please.
Thanks, Doc Oc.


Quote Originally Posted by tubbbbbby
waterd the plants at a ph of 7, and the run off increased and was around 8 is that possible or was the reading incorrect.