New shoots look thin and yellow and twisted?

From what I can tell from deficiency chart it looks like sulfur def but idk why never had issues before with anything… these are new from seed Runtz and Gorilla Zkittles … been four weeks in the big pots 24/7 , wee doing great had one with 9 point leaf thought looking good then first tops started twisting now new growth looks yellowish and thin. Only fed once lightly with fox farms grow big and big bloom… maybe need more before I start to flower idk? They had been under t5 and just put under led yesterday but the twisting started way before. Any help would be appreciated….thank

Where is the rest of the plants?

leaf twisting is typically a ph issue. i dont see any deficiencies

So really nothing is getting better.. I thought let dry out but more I read I thought bad ph so today I flushed one with ph 7 water… checked runoff… was 5.1!! So put last gallon in ph to 7.5 and added 1/4 cup baking soda to top 6 inches..( mixed it around) now I guess let dry out and start light feed? Any thoughts… they started canoeing bad today that why I decided to flush. Any input would be great… got temp at70, humidity 53, fan blowing gently… all from seed put in those pots April 1, so been vegging 4 weeks.

Whats your temps at? You got decent airflow?

5.1 is really low too.

Yeah good airflow, temps steady 70, humidity around 50.

Se 3000 spider farmer light, fan blowing, don’t have exhaust on cuz been leaving door cracked during veg

Yeah I figure I got to raise my soil ph that why I added the baking soda. Not sure if anything else works?

Dad-grows-best69 said:

Se 3000 spider farmer light, fan blowing, don’t have exhaust on cuz been leaving door cracked during veg

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Aye that won't work, you need something to pull oxygen into the grow room. get your extractor on. As for sorting pH in soil, being a water baby I can't help you there bud.

Ok I’ll turn my exhaust on…

But pretty sure I got enough air flowing… but that ph 5.1 been locking out my nutes so I got to raise it…

Dad-grows-best69 said:

Ok I’ll turn my exhaust on…

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Always have that baby on, man. Replenishing spent air is key. Leaving the door open just doesn't cut it but tbf I'm not sure that's what your issue is. Have a wee look at sorting your pH bud. All the best.

Seriously dude, get your environment sorted and the rest is gravy.

Man, I remember my first grow I thought I could get by without an extractor.... hell I even thought I'd get by without a carbon filter! Baaaaaaad idea

This is a second room I just added been growing same place 10+ years … always just leave door cracked during veg .. I got carbon filter with exhaust that I turn on when I got to leave door shut during flower dark period … always been good … but really never had problem with soil ph either… must be a bad bag… shit happens gotta adjust ph me thinks… here my other plants btw… got perpetual going harvest every 3 weeks clockwork for years

baking soda is high in sodium as well to ph the medium calcium carbonate is much better and you should do that before planting in the medium, also runoff ph doesnt mean anything afaik, it doesnt mean anything in organic soil at least. i dont know what you’re growing in and in what style but its better to do a slurry test to determine the medium ph.

crimsonecho said:

baking soda is high in sodium as well to ph the medium calcium carbonate is much better and you should do that before planting in the medium, also runoff ph doesnt mean anything afaik, it doesnt mean anything in organic soil at least. i dont know what you’re growing in and in what style but its better to do a slurry test to determine the medium ph.

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Thanks I’ll try that… never had this problem before always use same dirt from local greenhouse. Going to put some Dolomite lime on top too …. First I’ll do slurry test though….. ty