Oh yeah, I forgot that. When I said see if the liquid is discolored, that's another indication that you might need to flush. You SHOULD measure ppms in a soilless mix, but usually if the pH is correct and you see lockout/scorch symptoms, you can tell that you need to flush. Most soil growers don't have EC meters. I've TASTED my runoff before to determine salt buildup- it definitely has a flavor all its own- salty, yet metallic! A fine vintage! :wtf:
stinkyattic Reviewed by stinkyattic on . Soil Runoff pH, Flushing to correct lockouts- Why and how to do it! This is a common question that comes up when troubleshooting, so I thought I'd post up a little summin summin. Why do you want to know your runoff pH? Simple- it's an indication of how your water, fertilizer, and grow medium are interacting chemically. There are 3 measurements that are important to know when you are caring for plants growing in a soil or soilless medium. The first is the pH of your source water. Next is the pH of your nutrient solution after the fertilizers and Rating: 5