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manapool_indoor started grow question 3 years ago
Hi guys, the development of the girls seem normal, there are no slow grow or stuck. But the plant #2 still have what it look to be a magnesium defiency still the beginning. Plus since like a week, the tip of the leaf are yellowing too :unamused: What you guys think about it ? Thx !
Version 1
17 weeks
Version 1 manapool_indoor
Green Crack
23 comments · 3 years ago
Resolved
Week 5
Leaves. Tips - Burnt
Experimentgreen answered grow question 3 years ago
Hey there so i agree with the look of mag deficiency, whenever the leaves have that margin discoloration (it always looks like a grid to me) i think mag. Its often with other deficiencies too and low ph. If your roots are incapable of absorbing it i would suggest doing a foliar application (close to lights out though) like you're doing...but maybe try epsom salt rather than an actual calmag sup, as E.S is mostly just magnesium.
I see you dont have a ph listed, if ypu don't have a pen maybe you can get your local water report to get the starting ph? I think mag does best 6.5-7. Finding a very finely ground dolomite lime to add to the soil may be the best option if ph is unknown as it helps to buffer the soils ph. I

hope you find your troubles and can fix them. :v: I know ph can be a nightmare, but it definitely helps rule out a lot of problems. Happy growing
Th3L0rAx answered grow question 3 years ago
I’m gonna say nute are to blame for this, 1. Light burn usually makes the leaves curve upwards think reverse claw and it would be even across the top portion of the canopy. 2. Nutes generally show minor burn on the tips working back. 3. PH for veg should be 6-6.5 easy flowering a bit higher. 4. Your HID light is a bit close your internodes distance is super compact so backing it off 4-5” won’t hurt either. Because the symptoms of this issue are all similar I would recommend checking the run off after a ph water only using EC to check for salts, I would also raise the light a couple inches and watch. Always check the newest growth to see if it’s corrected.
Mrs_Larimar answered grow question 3 years ago
Hi, i was looking through your Diary, In week 3 it looked like a lockout, by wrong PH. But the actual problem looks like your lights are to near. Your plants are growing very dense and close nodes, and it looks like aLightburn to me. Rise your Lights and watch if the newer grow looks better. The burned leaves dont heal. even get brown or white in worst case. but if your light are more away from the grow it should not appear again
OutForReal answered grow question 3 years ago
35% of RH so it can be a heat issue caused by the dryness , of not then it is a nutrient burn ( I would not bet on the nut burn ). If it was a mag def it would have been fixed by your feeding and as you'r working with soil I would just continue to give extra cal mag. Btw a big light with no more than 18h of light will NOT put your plant in overdrive so she will NOT be indeed with more Calcium , it happens to Autos growers who are using a light schedule like 20/4 or 24/0 and you can check that fact by using Google.