Both Strains Developing Issues After Feeding - Pics

I have two strains that are 3 weeks into flowering. I fed them a teaspoon of Big Bloom each with their watering last week. They are now both having the same issue: some leaves are yellowing at the edges, but not all, and the very tip of the leaves are pointing down and brown.

Organic soil, distilled water, 65-88 degrees, 1K HPS @ 750w, and 35-45% humidity.

Thanks for your help.

Are you watering too often? Looks like multiple defs

i agree with snafuu also is your ph ok? including run off, got to say they look like theyre forming well for 3 weeks though, are the yellowing leaves at the bottom or higher up?

The plant looks to be going into lockout. I suspect your soil's buffer is not right. Check pH and add ca/mg to feed water

I checked runoff. I'm getting 6.2~

I know that isn't ideal, but can a little more acidity cause that??

I'm starting to think it's somehow lacking nitrogen because roughly 10% of the leaves are yellowing from the outside, and I've only fed them twice in flowering and watered 3 times so far. Thoughts? Maybe some N? or hold off?

SWED1985 said:

I'm starting to think it's somehow lacking nitrogen because roughly 10% of the leaves are yellowing from the outside, and I've only fed them twice in flowering and watered 3 times so far. Thoughts? Maybe some N? or hold off?

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You got it give them a foliar feeding and they will green back up. Not to much it will burn!

Ok strike that no water on the buds. Just give them more food. They use up a Lot while flowering.

Soil self pH's!!!! The pH of the run off is just that......The pH of the run off. Not the pH of the soil....
You do not have a pH or a lock out problem.

Do the pots have a way for any extra water to get out? They cannot "sit" in wetness.

What are you using for nutrition? Big Bloom right? The NPK is 0.01 - 0.3 - 0.7 right? Do you see why your having a low nutrient problem?

Your soil is not a long term water only organic that supplies nutrition through out the plants life cycle! It cannot get what it needs from the soil any more and the Big Bloom is lacking the needed nutrition!
Your NOT feeding enough!!!!!!!

I might add the Grow Big Hydroponic at every other watering and continue the Big Bloom at every. Hell, I would use it for 2-3 feedings in a row to get the soil jacked back to about normal.....

Someone said to foliar for quick responce to the nutrition and to repair the leaves.....You can,,but keep it off the bud sites!

FEED IT NOW!

You had mites at one time eh? I see mite damage on the pictured plant. BE SURE THEY'RE GONE!

Good eye. Yeah, one of my auto's had them bad. I haven't seen anymore after some treatment.

How much BB should I add per gallon? 1/8 cup?

And yes, they have plenty of drainage holes.

Thanks.