I’m having issues with my newest grow. I’m seeing what looks like a calcium deficiency in one plant and total lockout in the amnesia haze growing in fox farm ocean forest mixed with happy frog castings and perlite just added my first bit of gh nutes week 5 to 6 of veg with cal-mag and Recharge (thanks scotty). I checked my runoff pH and its at 5.2 ppm is 2000+. I think I jumped the gun and flushed to around 800 ppm have been feeding 1/3 strength on nutes and just using water pH 7 with Recharge and some cal-mag keeping ppm of water going in at the 800 range. I have not had issues with ocean forest in the past curious if i got a bad batch? Or if those numbers are normal I know you can’t rely on runoff that much but I have some serious issues in the grow :/ don’t know what to do besides wait.
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Assuming you’re using tap water, GH nutes have calcium, your tap has calcium, both OF and HF have calcium….then you’re adding more calcium. Without pics I can guess, but based off of that info you’re using too much calcium.
Try a slurry test to verify those numbers you got from runoff.
There’s not a lot of info to go off of… environment, pot size, lighting. There are other variables besides inputs that will effect nutrient uptake.
If you can post a new question with pics and more info, we can have it merged over here and help you further.
If ph is that low your soil doesn’t have the necessary buffer of dolomite lime and might be why things are funky. Anything under 5.5ph and calcium is no longer plant available.
I top dressed a bit of wood ash and took a soil sample from the middle and looked to be ph6 on the color chart and roots looked nice and white have just been watering with ph7 tap recharge and gh nutes around 700 ppm plants are in 3 gal fabric pots and under a hlg 600w kit week 5 or 6 into veg just made a new post with pictures