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runoff PPM extremely high.

noobiii
noobiiistarted grow question 4y ago
So, I am using tap water and its ppm is between 300-400. However I just checked by runoff water PPM and it came over 2500 with ph around 6. I have not used any fertilizer whatsoever and the soil is BioBizz Ligth Mix. What could be causing this issue?
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Organoman
Organomananswered grow question 4y ago
If your plant is growing well, is there a real problem? Your high readings are probably from the fertilizers the manufacturer added to their soil mix.
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Hemprace
Hempraceanswered grow question 4y ago
Your substrate (soil) will have nutrients already. You do not really need to add anymore at this stage.
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