3 are in 3-gal and one is in 5-gal. Rootbound?
I check it but I get really inconsistent results. For example, I fed them last night - the first feeding with Bloom. At first I didn't try to pH up the mix. I just started watering. I checked the very first bit of runoff, and it was LOW...dark red...off the scale. So I thought that must be the mix and that the soil should be able to buffer it. And I kept watering. I measured runoff pH again after all the runoff had runoff from that pot, and it had buffered it a little. But it was not good...still way too low. So I Googled "Why is Earth Juice so acidic?" and found lots of folks having the same problems I'm having now....yellowing leaves in early flower. That's why I asked you if you're bubbling. It seems that in order to use EJ without using pH UP, you need to get an air pump and stone and set the mix in a bucket for two days pumping air through it to lower the pH.
Well I'm not setup for that and not sure I really want to go that route. So I grabbed the pH UP and started adding a bit to the EJ mix and testing. I had to add a LOT of pH UP before it got into the yellow. Like 10 ml...maybe more. But it finally got there. So I finished feeding with the pH'd mix and the runoff was testing out better.
So, I'm watching your grow very closely and wondering what you're doing about the low pH in EJ nutes. I'm definitely considering moving away from them. I still want to stay with organics, but not sure I can deal with the bubbling or adding fairly large amounts of PH UP.
Yep, in IT since '95. I work for a huge corporation, but I work from home.
Hmm... 5 gallons should be ok I suppose... And the plants are not that big.
- Is the one in the 3-Gal worse than the 5's ?
- Could you possibly pick one plant out of the pot to see the roots ? Are the roots showing in the bottom holes ?
- Soil buffering : What is the "living" medium in your soil ? I have 20% compost in there. What's in yours ?
- Dolomitic lime works ok to PH+UP, if you want to try it. BUT it gains like 1 more point in 12 hours, so you must aim for a very little PH up at first and let stand for at least 12 hours. I found that just 1/8 teaspoon for 5 gallons water is about right. Don't add more, it will sneak up on you. Also... if you first add the Lime in plain water, it tends to top at PH7, so is less effective when adding nuts after. I think its best to add the Lime after the nutes. Use the fine powdered Lime, as the other kind (granules) dilutes event slower.
I'm sorry that you have such difficulties, and i wish I could give you my secret recipe, but I'm just lucky I guess.
BUT I'd say you have an underlying cause, and it might well be roots. Maybe your plants grew a LOT of roots. Your soil would be unable to buffer adequately, your roots would be unable to take up the nutes (N) adequately, etc. Nitrogen has a WIDE range of usable PH, unlike many other chemicals. I guess if you problem was only PH, you'd see other nute deficiencies. Nitrogen is absorbed at PH5 or higher, but Phosphorus, Calcium, Magnesium, Mobylium need PH 6, 6.5 +. Your leaves are not spotted or red-ish or weird (Phosphorus, Calcium, Magnesium, Mobylium) and the only symptom seems to be the yellowing.
Runoff water : I think you should make sure you have at like a solo-cup full of runoff water. Test only that sample. Mine comes out at PH6.25. If yours comes out at like 4.5, you should do something, either :
- Use some kind of PH+up
- Repot in 7 gal pot, adding something like 20% compost to the new mix. Maybe try that with only 1 plant.
Good day Mota.