Toxicity, help

Rockwool · Mar 14, 2016

Rockwool cubes, GH nutes. 4ml Grow, 4ml Micro and 5-6 ml bloom. Ladies began flowering on 4th. Have been flushing but symptoms seem to remain, i am confused by yellowing in middle of leaf. Under a 400w light, 80 degrees farenheit consistently. Also seem purple stems and unsure about this. She just seems down in general

Rockwool · Mar 14, 2016

mrgreen2015 · Mar 15, 2016

make sure you are not over watering. Had a very similar issue with rock-wool and hydroton. I was over watering. I turned on the dehumidifier so the ladies could sweat out all the water. Also that gives the rock wool a time to dry out and prevent root rot.

Rockwool · Mar 15, 2016

mrgreen2015 said:
make sure you are not over watering. Had a very similar issue with rock-wool and hydroton. I was over watering. I turned on the dehumidifier so the ladies could sweat out all the water. Also that gives the rock wool a time to dry out and prevent root rot.

Okay, so would you say that a whole day is enough time to dry out? I mean thats what im doing atm.. Should i do like two days maybe? Thanks

Olive Drab Green · Mar 15, 2016

Water it every other day or every third day. That looks overwatered.

Rockwool · Mar 15, 2016

Olive Drab Green said:
Water it every other day or every third day. That looks overwatered.

Thank you!!

Olive Drab Green · Mar 15, 2016

Your roots don't like to be wet all the time and enjoy some time drying out a bit, and if it dries out too much, it'll be easily noticed because it will "pray" and it's easy to fix before it's too late.

onkulas · Mar 15, 2016

Olive Drab Green said:
Your roots don't like to be wet all the time and enjoy some time drying out a bit, and if it dries out too much, it'll be easily noticed because it will "pray" and it's easy to fix before it's too late.

praying leaves is a sign of underwatering?

Olive Drab Green · Mar 15, 2016

onkulas said:
praying leaves is a sign of underwatering?

I guess droopy and brittle is a better description?

Olive Drab Green · Mar 15, 2016

If it's not brittle but waterlogged and soggy looking and droopy, overwatering.

onkulas · Mar 15, 2016

Olive Drab Green said:
If it's not brittle but waterlogged and soggy looking and droopy, overwatering.

ok.. i have the "praying leaves" going on right now on my plants and i knew this was a good sign
so when i read your comment, it got me worried :-D

Olive Drab Green · Mar 15, 2016

onkulas said:
ok.. i have the "praying leaves" going on right now on my plants and i knew this was a good sign
so when i read your comment, it got me worried

Cupping/Tacoing is heat stress or magnesium issues, usually, I believe.

Olive Drab Green · Mar 15, 2016

I used the wrong terminology and had an improper understanding of what praying was, but corrected that. Just wrong terminology, sorry.

SPLFreak808 · Mar 15, 2016

Rockwool said:
Rockwool cubes, GH nutes. 4ml Grow, 4ml Micro and 5-6 ml bloom. Ladies began flowering on 4th. Have been flushing but symptoms seem to remain, i am confused by yellowing in middle of leaf. Under a 400w light, 80 degrees farenheit consistently. Also seem purple stems and unsure about this. She just seems down in general

I really don't think it needed a flush, but if you did it would be wise to finish the flush with some food.
The affected leaves are way on the bottom, the plant is just moving & eating the nutes because you flipped to flower. Just keep an eye on it, it doesn't appear to look toxic so if symptoms get worse i would up the feed a bit. A clear pic of the whole plant in white light would help much more.

Rockwool · Mar 15, 2016

SPLFreak808 said:
I really don't think it needed a flush, but if you did it would be wise to finish the flush with some food.
The affected leaves are way on the bottom, the plant is just moving & eating the nutes because you flipped to flower. Just keep an eye on it, it doesn't appear to look toxic so if symptoms get worse i would up the feed a bit. A clear pic of the whole plant in white light would help much more.

So the crusty outer bottom leaves is not from nute burn no? Would you say it is over watered also? I'll let it dry up for a while and then add nutes.. Can you tell me what i should be feeding for 12/12 with gh nutes because its recommended to be 6ml grow 6ml micro and 10ml bloom atm, will that be overkill?

Olive Drab Green · Mar 15, 2016

Not necessarily. That description could be a few things.

Olive Drab Green · Mar 15, 2016

For flower, high P and K, low N

Rockwool · Mar 15, 2016

Olive Drab Green said:
For flower, high P and K, low N

Judging by the pictures of the leaves with what i assumed was nute burn, what do you think it could be? Im guessing it's hungry as its becoming pale green/yellow mid section of the leaf now.. So i have fed that plant now. What do you reckon it is that causes the crispy browness?

Olive Drab Green · Mar 15, 2016

Overwatering and possibly magnesium deficiency is my guess.

Olive Drab Green · Mar 15, 2016

Could be phosphorus, too. Your plant needs it for 12/12.

Toxicity, help

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