Did you add anything to the soil in the new pot? Also what kind?I'm growing in soil. Recently added a reverse osmosis for the water. Last watering was phed water. Ppm was 25. Ph at about 5.8 to 6. They were moved to large pots and week ago.
The leaves visually jump out.
I just looked up Coco Loco and 6.5 appears to be the sweet spot for water you're putting in.It's my first grow. I started on miracle grow, but moved them to coco loco a week ago. They're about 5 weeks. I used just the PHed water after the repot. I added water until it started coming out the bottom.
It's just the one plant, the others look normal. They're all bag seed, so probably 3 or 4 varieties in the 4 pots. I say that because 2 look really close.
I've been thinking I need to get the CalMag to have on hand.
I got a soil meter and it says 7 to 7.5. I'm close to watering again, so I'll run some through to test with my good meter. I was seeing the 7 to 7.5 in the soil, so I was adjusting for a little lower with my 6.0 water.
Now I'm pretty sure it's an iron issue. Chlorosis on only the top growth combined with the switch to RO water with no cal mag and the 7+ pH. The lack of buffering capacity in the RO water is going to make the pH drift up really fast and make the iron unavailable. Any alkaline buffer in the medium will immediately neutralize the acid you put in. You see it right away on the new growth because it's an immobie nutrient. I would flush with a lot of 6.0 pH water to try and leech out any alkaline salts that may have accumulated up until now. If you were using high ppm tap water before they may have built up and will quickly neutralize any ro water you add now.
I would definitely use tap water until you get some calmag. If it's above 200 ppm just cut it with the RO water. Most good brands also have chelated iron in it which is more available at wider pH range. You will also notice you have to add way more pH down to the tap water and this is buffering at work. When that water hits your soil it's much more stable.
But definitely flush that medium a bit, it's holding too much + charged stuff. Iron is also + and needs low pH to be available.
I hope my all over the place explanation made some sense
What salts are you referring to?If your using a soil probe that's normal, what's coming out the bottom is likely much lower. You'll get a lower reading further down because that's where all the salts drop to. But I would only adjust down to 6.5. I believe thats what the maker recommends.
There looks like there was a salt build up because I doubt coco loco is buffered to 7.5 which is where he's at.Grower is using a shelf soil and shouldn't need to flush unless there was some underwatering (salt buildup) or there was a bottled nutes mishap. Soil maker says give it 6.5, grower was putting in 6.0, kind of tells it's own story why it looks deficient.
What exactly is the deficiency then? My assessment was iron and I gave the reason why.Grower is using a shelf soil and shouldn't need to flush unless there was some underwatering (salt buildup) or there was a bottled nutes mishap. Soil maker says give it 6.5, grower was putting in 6.0, kind of tells it's own story why it looks deficient.
What exactly is the deficiency then? My assessment was iron and I gave the reason why.
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