T
TurboAllWD
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How old are your light bulbs?
hey never used canna before so I dont know how strong it is but 5 ml a/b seems light to me - prolly they just need some more base nutes
when you say "They are coming out a little high on the ph 6.0.-6.2 until they get their nutes and it goes back down to 5.9-6.0 and 500-550ppm's/1-1.1 EC"
are you refering to the ph of the runoff? with coco you do not get an acurate ph reading from runoff - fyi
In veg, I run 5 ml ca mg + 7ml a&b. 10 ml in flower. Try that on a few, and see how that goes.
-TF
I don't know Canna products, haven't used them, but those girls look like they have an issue with phosphorous, something's not playing well. Reddened petioles are what I'm seeing, along with that awfully low relative humidity (is it really 25%?) which is causing the leaves to turn downward and inward. Transpiration is the issue with that.
If you can play with pH a bit, let it get down to 5.8, then let it range back up to 6.2, you might see a difference. Also, you could try giving a foliar of Epsom salt (MgSO4) at a rate of 1/4tsp per gallon. If they perk up a bit and change appearance, then you have your answer right there. Things got a lot easier for me when I finally separated calcium and magnesium, because it made it a lot easier to see the direct effects of each thing. Plus MgSO4 provides a bit more sulfur.
Also ppm is way to low imho... lol they are not new rooted clones... try 700 - 1000 ppms after you get that ph to 5.8....
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