The Squid
Spaced-out CephaloMOD
Hiya Squid! I've looked thru the last dozen pages of you thread,what was the ph of your promix when you started? Not runoff but actual ph of the stuff before you planted? I ask because i just cracked open the bale of promix bx i bought a couple weeks ago and checked it with my probe just to see what it was. It read 5.8 consitently with 2 different probes and tests and thats right outta the bag wet down with 7.0 distilled water to test the soil with the probe.
I don't have a probe so I son't know exactly, but when I run say 6.5 through I get 5.85-6 runoff, and when I run 5.7-5.9 through I get 5.7-5.8. So that tells me it's about the same as yours. What kind of probe are you using?
Either way, 5.8 is just fine for Promix from what I have learned. I was trying to keep it around 6.5 and was having problems, even down to 6.2 or so. But I am about to start lowering it to hydro ph, 5.6 on up to about 6.1-6.2. Nothing over 6.3, and see how that goes. It's soil-less so needs a lower ph from what I have learned about it.