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High TDS and low ph runoff - Lockout? deficiency?
JustAnotherGardenerstarted grow question 4 years ago
Struggling with some bad soil (beginners mistake). I water with dechlorinated tap water at around ph 7.4 and 400ppm (not feeding yet). But runoff ph is 6 and around 1000 ppm.
Am I dealing with a N-lockout? why such a ph difference and high TDS value?
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Leaves. Color - Yellow
Feeding. Deficiences
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Hempy_The_Kidanswered grow question 4 years ago
Most good soils have nutrients for about 4 weeks. It will lower ph and raise tds. I've only used happy frog soil so I don't know about your soil.
JustAnotherGardeneranswered grow question 4 years ago
@sir_isO @Hempkid @B4RNS thank you all for your suggestions. I always make sure to have decent runoff so doubt its a build up. I wish I used dedicated cannabis soil which would reassured me things are okay. But having used a random mix of potting soils I decided to go for a proper flush as it seems like my plant struggled to uptake nutrients when there seems to be plenty. Also the ppm value started going up again so to be on a safe side, flush was the wisest thing to do :)
thanks again
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sir_isOanswered grow question 4 years ago
Oh you may want to disregard what I said, as I checked in your diary that it kinda stabilized lately so it's probably getting there in terms of normalization.
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sir_isOanswered grow question 4 years ago
If the water going in is 7.4 and the water coming out is 6.0, I would guess the medium is likely fairly acidic (as in <6 ph)....
I'd probably add some calcium, magnesium, potassium and carbon buffering (like maybe a combination of potash/char, epsom salts, calcitic lime).
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JUNGLE_B4RNSanswered grow question 4 years ago
It’s because you don’t pour enough water thru the pots when you water your plant. When you water your plants, try to get 20% of drain coming out.
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