Slowish growth Blue Kush.

i just got done dealing with this issue, actually. my girls looked like yours (claws, extra dark, leathery leaves), ph and ppm both dropping rapidly, etc. i use pbp nutes, r/o water in dwc. initially, i thought it was n toxicity. i cut back the n a bit, and they started looking worse. what fixed it for me was going from 2 ml/gal calmag to 5 ml/gal. the problem there was that i started this run using my old tap water recipe after moving to new facility that has r/o. oops. anyway, even if you run tap water(or in your case, well water), there may not be not enough calcium and/or magnesium in it for your girls (it may be worth your while to obtain a water analysis). if you decide to try this, i suggest 2-4ml/gal of calmag, as there is likely at least some c and mg already present in your water.

I see the inter nodes are growing a bit, it will take a week or so for the canopy to recover and start growing again. Do you still have that light raised up?

thenasty1 said:

i just got done dealing with this issue, actually. my girls looked like yours (claws, extra dark, leathery leaves), ph and ppm both dropping rapidly, etc. i use pbp nutes, r/o water in dwc. initially, i thought it was n toxicity. i cut back the n a bit, and they started looking worse. what fixed it for me was going from 2 ml/gal calmag to 5 ml/gal. the problem there was that i started this run using my old tap water recipe after moving to new facility that has r/o. oops. anyway, even if you run tap water(or in your case, well water), there may not be not enough calcium and/or magnesium in it for your girls (it may be worth your while to obtain a water analysis). if you decide to try this, i suggest 2-4ml/gal of calmag, as there is likely at least some c and mg already present in your water.

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Hmmmm... interesting, a cal/mag problem? Damn I always thought I wouldn't be having that problem because of the hard water I use, but you're right, I could have little to none cal or a shit ton of mag in my water... I should really invest in a RO filter. Cheers mate, I'll look around and see if I can get my hands on some cal mag. I can always dilute my water with distilled water.

blackforest said:

I see the inter nodes are growing a bit, it will take a week or so for the canopy to recover and start growing again. Do you still have that light raised up?

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The intenodes are growing and pushing themselves through the big fan leaves. They might even grow taller than the tip itself. Damn, I hope so, I have nevr had any luck with fast growing plants.
The light is still about 40cm from the canopy in that cooltube. I'll be watching and when I change the res I'll go steady on the nutes.

I'm a bit paranoid about having root rot, but when I inspect the roots (washed hands prior of course) and they don't fall off, are still firm, don't feel slimy and smell... earthy like roots would I think. The only problem is, is that they have a veeeeery slight yellow/creamy colour to them. I instantly shat a couple of bricks but upon further research, apparently it's normal when using Micro from GH. The creamy colour has been there for two weeks so I assume that's fine.

But I'll be ordering some cannazym as I have heard nothing but good things about it, good for prevention and what not.

Bloody hell, I don't mind the set backs in a way, it's a huge learning progress but CRAP is this annoying.

Hmmm... I've been inspecting the leaves today and the new growth seems to be on track, they have a normal green colour to them, a little bit of canoing and I even see a few pre flowers in the center. Not clawing as well so that's good.

The older leaves have a mix of dark green and lime colours, with claws. I think I read once that older leaves will not look better, so you have to observe new growth (?)

I've also noticed light green "stripes" appearing on the lower leaves between the veins, from this chart it looks like a nitrogen deficiency ---> but it could be a Mag eficiency. ALL DEFICIENCYS LOOK THE SAME.

EDIT: Ok, I think it's a magniesium deficiency, taken from groweedeasy.com "A light green or yellow coloring will begin to show on the veins and edges of the lower & older leaves - this is one of the classic signs of cannabis magnesium deficiency."

Light green/yellow colour? Check,
Veins and edges? Check,
Lower/older leaves? Double check.

I'll add some epsom salts.

By the way cheers @thenasty1 you're suggestion about cal/mag got me thinking.

I have too much calcium in my hard water and that's what caused the lockout. I added about 2.5 tsp to 3.5 gallons of the water (raised the ppms to 811!!) and well, we'll see what happens.

Damn, those epsom salts really pushed the ppms to 800, from 300! Would it be safe to add some more nutrients now?

Actually, I'll just do a foliar feed, apperntly it's a much better way and that won't be affecting the ppms of my solution.

Gregor Eisenhorn said:

By the way cheers @thenasty1 you're suggestion about cal/mag got me thinking.

I have too much calcium in my hard water and that's what caused the lockout. I added about 2.5 tsp to 3.5 gallons of the water (raised the ppms to 811!!) and well, we'll see what happens.

Click to expand...

i would go easier on the epsom salt. i have never used it myself, but 800 ppm is way too much. when i start with r/o water, i set the ppm around 200 with just calmag (comes out to about 5 ml/gal), then i add the rest of the nutes. i suggest testing your water before you nute it, and add epsom salt until your ppm rises 100-150 above initial test results (maybe 200, hard to say without knowing whats in your water). too much of that stuff will definitely bother the girls. also, i wouldnt rely on the foliar feeding, just make yourself a new res. and if you can, i would grab a r/o filter. sounds like it will be easier in the long run to build the water yourself. if your water is in fact heavy on the ca and light on the mg, its going to be a pain in the ass to get things dialed in since a lot of the supplements bundle the two together.

You're absolutely right man, I'm sure that if I got a RO filter, softwater flora micro and some cal mag I wouldn't have any problems... I was kind of hoping I wouldn't need to buy the filter on this run... I'll have to think about it.

Anyway, I fed her some nutrients yesterday at 480ppm (so that's about 100ppms of nutes) and in a day they dropped about a 100 so she was really hungry!

Upped them to 480 and things have stabilized, so it looks good.

The leaves themselves still have problems, but the new growth looks ok, I also moved the pH to 5.9 and will not be going below that, since calcium is not absorbed anymore at 5.9. That might encourage the plant to suck in the Mg from the water.

But the worst thing is, si that the growth is still going so bloody slow, I just don't get it. The shoots are growing but the apical nodes has just stopped, nothing is going on.

Maybe a few more days...

Right then, I'll try to get my hands on some cal/mag and some softwater micro on monday. I'll be buying distilled water for the moment, it has about 20ppms.

Unless of course the problem stops in two days, but I doubt it.

EDIT: might be buying a R/O filter 75 GPD, 6 bars, 3 gal/hour nothing fancy on monday.