Hellhazard commented8y ago
phosphoric acid is supposedly a better PH Down and is found in most hydro grow stores. the rust spotting seems to be from PH fluctuations in medium with sweet seeds genetics, it happened to me with RedPoison and Black Cream but not Bloody Skunk although all are treated the same. The genetics are strong vs nutrient imbalances but not against PH fluctuations. I also found with my PH pen that the bottom of the rootzone will have a very low PH by the time budding starts. Im not sure if it is just the way the plants grow normally causing such low drops (5,1) or if its from using PH'd nutrients... I always pour mine mixed at 5.8, tested and true.
Advanced Nutrients has a rootzone tribe of beneficial microbes/fungi/bacteria if you decide you need rootzone help ( voodoo juice, piranha, tarantula )
My black cream still hasnt changed colours yet.
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