soil ph??

[weezer]

You were right that if you run water at pH=7, that your runoff should be around 6.5-6.8. That would indicate that the soil pH is above 6.0 (hopefully above 6.2).

Ingoing water pH =7
Runoff mixture pH = 5.9
=
Soil pH = around 5.0

Seems like you'll need to invest in some pH up to correct soil pH.
Just my :twocents:
:stoned:

Thanks for your reply DOUG
Well the PRO-MIX already is limed for PH and is to be for plants 6-7