Heat stress or a deficiency?!?

[man10101]

hello and thanks for reading

hav now got the first problem of the grow!

and it was all going so well...


Problem: leaves are starting to discolour on 3 of 8 plants

Medium/grow method: gold label special mix soil

Feed: and supplements used: dutch pro grow a&b dutch pro bloom a&b dutch pro take root dutch pro multi total an liquid silicon

water source: tap ec 0.6 hard water area calcium 113.2mg/l

Strain/age: fastbuds wedding glue auto 7 weeks old today

light used: kingbrite 480w full spectrum added uv ir around 500 ppfd at mo

Climate: had heat wave last few days had up to 37 usually 26 - 28 day around 20 night

Additional info: hav just changed food to bloom
Hav jus been away for 4 days
Usually feed every 3
Came back to very droopy plants with yellow fan leaves 2 days ago
Popped right back up after feed
Leaf discolouration on some plants has continued though

So it is heat stress from not being fed when needed on the hottest day of the year?!?
Or is it the start of a phosphorus deficiency (going by pics in infirmary)?!?
or is it too much calcium in my water causing lockout?!?

Hav grow journal for all details...

https://www.autoflower.org/ubs/blog/my-most-perfect-best-one-yet-no-excuses-auto-grow.555/

 

[namvet25]

Are you ph'ng nyour water ? Some leaves will turn yellow at this point and this is normal. Don't over feed bloom nutes









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Make sre your PH is correct.






























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