Unstable pH and ppm in run off
Scilefstarted grow question 3y ago
Why run off mixture has stable high pH and doubled ppm?In 6.1 500 ppm Out 6.4 1020 ppm (each watering for the last week)I use Top Crop Coco substrate prepared with 0.2 g/L nutrients, how long will it affect run off ppm value?
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CULTIVATORFROGanswered grow question 3y ago
Hey, it's within the correct parameters, 6.4 is good and the ppm at 1000 isn't too much either. If you do a root flush, you'll remove all the nutrients from the substrate. If you think the EC is high in your drainage level, just water with plain water until it drops a bit. But for me, it's perfect.
Storkanswered grow question 3y ago
You likely be dealing with salt buildup around the roots. As you feed your plants, this buildup slowly dissolves back into your runoff, driving up your PPM/EC, To deal with this, you need to flush to clean up the salt 🍻
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