@OGIncognito@MidwestGuy I can’t seem to bring the PH up in my runoff. I need help again! Smh lol
Setup: 2x2 Grow tent, carbon exhaust, SF1000 Spider Farmer light, Co2, autopot( Not On Yet)
Plant: Do Si Dos Auto (3wks old)
Nutes: Jacks 321 AB silica + Epson (TPS Billions every 7 days.)
2gal plastic pot
Medium: Happy Trees Premium Coco+Perlite (Pre-washed)
Layer of PH neutral clay pebbles in the bottom of the pot.
Climate average 70°-75°F RH 57%-65% Feeding at: EC 1.5 & PH 6.0
Plant leaves looks like it’s having so.e development issues so I checked the Runoff. I should have been checking it but made the mistake of not.
Runoff was EC 1.5 & PH 4.6
Did a flush with tap water. At first PH the tap water at 6.4 and eventually at 7.0 because the Runoff PH barely inrease to 5.2
I’ve pushed ~ 15 gal overall flushing but I can’t get the PH to raise anymore. Im at the point of throwing everything out and starting over. What should I do?
Not an expert, but you may be able to feed it at a higher ph until it balances, or if you still want to water at a 7ish ph you could do a sulfate top dressing to increase the ph of the soil. Hopefully others can help you with better certainty than I can.
Supposedly wood ash can also be added as a top dressing to increase soil ph. Gl gromie!
Oh! Also, let your water sit open for a day before adding it to your plants, it helps get the chlorine out so long as it’s the kind of chlorine that evaporates.
I’ve just started growing myself back in August and am a few weeks from harvest, I’ve been using autopots as well, though I used reptile coco coir as it’s just what I had around, it definitely needs all the calmag/Epsom salt you can throw at it (within reason).
Also you said nothing about your par/ppfd/dli that is another point to check on, but isn’t likely your issue as that is a fairly low ph for runoff.
Your plant could just be sucking in all that hydrogen too so that’s why the runoff is lower… pics may help too, around the 3rd week from seeing the coytaledons then you should have 3 or 4 nodes by now. Also with all the flushing you may have compacted your soil.
Sorry if this sounds like a whole bunch of rambling, I’m just throwing spaghetti at the wall to see if something sticks, ideas for others to ponder and give a firmer response to…
Your EC doesn’t suggest lockout, but flushing can take MANY times the pot volume to reset the media. I would mix feed at 6.0 and run a gallon thru, wait ten minutes to loosen things up and send another, I would repeat until it comes back in line, resetting the coco. Did you buffer your coco, or is it pre buffered ? How often are you feeding, feed frequency can change coco ph drastically.
How old are plants and what kind of shape are they in?
You mentioned coco was washed but do you know if it was also buffered? Because it sounds like typical behavior of coco that wasn’t buffered or is allowed to dry out too much.