Quote Originally Posted by and68i
There has been much confusion about promix. I contacted the co who makes it
and since it is soiless it is considered a medium for hydroponics and the Ph
should be 5.9.
You're out of your freaking mind.

You don't put that in a hydroponics system, you totally screw your TDS/EC readings as that garbage dissolves in the acidic water.

Soilless culture and hydroponics are two ENTIRELY DIFFERENT things.