Leaf curling &nd Leaf tip curl.. HELP!!!

Block Johnson

New Member
Wassup everyone! New to the forums and have a few questions or should I say concerns and would love the help. This isn't my first grow about my 4th but im still going to say im a newbie.

Ok first off I'm running a test run of Bubba Kush autoflower. (dont like auto no control) Growing in 5 gal. bucket w. drilled drainage holes in Valfei VM-1 all-purpose soil under 6 42w 6500 fluro 18/6. I was using 8 but realize I didn't need thay much neing that it isn't that big yet. I added extra perlite for more drainage and aeration. So, I'm at about 30-35% on perlite. I added extra dolomite to help with the pH. I added an about 1 tablespoon per gallon.

Starting from straight from seed. Don't know how you guys do Day counting enlighten me, but im at day 19. That being the 18th day it poked through soil. I transplanted from solo cup day 12. I now think that's too early to go into 5 gal. I have only fed my MJ once(Fox Farms Trio) since the grow that was day 16.

The problem now is im have little tip curling down in some new growth, nd whole leaf curling up, not the edges but leaf itself. Im around 79 degrees wit 43% humidity. No discoloration well to me atleast.. no nute burn. Is this heat stress, low humidity, lack of nute, too much nute. Too much fan, too little fan. If you need me to add any extra info let me know. Acceptin all criticism as I'm no pro nor perfect.

Update : 2 newest pictures are from this morning hour and half after lights on ...
 

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May be a zinc deficiency... i could be wrong though, but my plants had same issue. Added magnesium sulphate in flush and leaves greened back up! Flush thoroughly then dont feed till soil in bottom of pot bone dry. Will unlock roots by washing off salts, then assume regular feeding. WITH AUTOS YOU HAVE TOTAL CONTROL! You know it will only need water till 21 days. Then half strength nutes every third water untill 35 days. Finaly introducing flowering nutes with growth nutes at a 50/50 rate, made at half strength still. Ween off growth in week six and start giving slightly stronger flower nutes each week. No nutes after week 8 or 9 strain dependant, then flush that bitch for 3 days. Starve her for 2 days then lights off for 36 hrs, then choppety chop chop.
 
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