Dutch Passion Dutch Passion multi-strain in soil under LED. My 12th grow.
- Thread starter steelrat
- Start date
Damn, i just read that Plagron light mix is good for one week only so it could be N-def, man oh man!
I thought it was good for two weeks - Always Read The Label!
Any ideas peeps, calmagdef or N-def ?
cheers,
steely
I thought it was good for two weeks - Always Read The Label!
Any ideas peeps, calmagdef or N-def ?
cheers,
steely
I would say that they are underfed. Plagron is very, very poor with nutrients, your pots are very small and it looks that you keep them dry. Airpots, especially small, dry out soil quickly.
Maybe you have not watered them very much and food has not dissolved and they can not reach that little what is in Plagron initially.
And that is all. Plants are eating themselves. If you water and feed now, it will take some time to recover, but brown will not disappear.
Maybe you have not watered them very much and food has not dissolved and they can not reach that little what is in Plagron initially.
And that is all. Plants are eating themselves. If you water and feed now, it will take some time to recover, but brown will not disappear.
Thanks Gonzo, hard to tell from the pics but they are only a little dry at the top and have been watered correctly.
I think it's N-def, too, but will post in live help as others disagree.
Thanks all
steely
First find out what the "Ph" of the soil is by checking 500-700ml of fresh run off. Flushing with zero nute water Ph'ed at 6.5 @ 23c.
Flush is 6.5 going in run off is 5.8. half the difference (0.7) = 0.35. ADD 0.35 to run off ph to get soil ph, ie 5.8 + 0.32 = 6.15 a bit low.
Flush is 6.5 going in run off is 7.4. half the difference (0.9) = 0.45. DEDUCT 0.45 to run off ph to get soil ph, ie 7.4 - 0.45 = 6.95 a bit high. See below on how to adjust medium Ph
Then check the "Ec" of run off. The plagron contains coir, and is usually alkaline. And "Some" granular slow release nute. We need to keep in these ranges >>
View attachment 430398
The nercrosis is at the leaf edge, and only the lower leaves are affected, this suggests P&K lock out due to a Ph above 7, or lower than 5.5. The crispy brown leading edge is what tells me its PK lock. it is very difficult to lock out Nitrogen due to wide ph uptake ranges, as above. it could be Nute burn, but you would have to be feeding an Ec above 1.5. Which is unlickely due to age of seedling etc.
if acid run off ph 5.5-5.8 with high Ec 2.5 ? flush with a zero feed flush water @Ph 8 @23c (Post tap water conditioning) to drag up soil Ph. And flush down any high Ec reading in the flush water. that is indicated. Warm water with hot kettle before Ph'ing.
if alkaline flush water ph 7.4 ? (Run Off), above 7, flush down with zero nute flush water @23c using a flush of Ph 5.5 with "Nitric Acid".......... keep adjusting untill you get it (Flush water) back down to around 6.5. And an Ec of 1.0-0.9. You will be back in uptake range then. Will take 7-10 days for the "Dames" to show the results.
Then check run off with a flush every 10-15 days in case it moves of again. And keep run off Ec around 0.9, before re feeding commences.
Flush is acid use silica / silicone to bring up Ph, flushing with water 23c@Ph8
Flush is alkaline use nitric acid in flush water at 5.5-5.8 flush water ph, to drag down the "Buffer" salts in medium.
I now run feed Ec's around mid flower, no higher than 0.8-0.9, and plain warm water flush to run off, once in every 5-7 days of feeding low Ec's, keeps on top of 'Un_Used" NPK,or "Soft Mineral Rocks" !! make sure (Important) soil temp is not lower than 21c, temp affects Ph condition.
This is why cocco grows feed at Ph 5.8 to combat alkalinity in coir/cocco etc.... if its a component of a pre made mix, the same applies.
And is proof these pre made mediums are not checked for Ph content. You can do this with 500g of medium before use. flush it and check nute content with Ec meter, and ph of run off before using etc.
Automaster
Flush is 6.5 going in run off is 5.8. half the difference (0.7) = 0.35. ADD 0.35 to run off ph to get soil ph, ie 5.8 + 0.32 = 6.15 a bit low.
Flush is 6.5 going in run off is 7.4. half the difference (0.9) = 0.45. DEDUCT 0.45 to run off ph to get soil ph, ie 7.4 - 0.45 = 6.95 a bit high. See below on how to adjust medium Ph
Then check the "Ec" of run off. The plagron contains coir, and is usually alkaline. And "Some" granular slow release nute. We need to keep in these ranges >>
View attachment 430398
The nercrosis is at the leaf edge, and only the lower leaves are affected, this suggests P&K lock out due to a Ph above 7, or lower than 5.5. The crispy brown leading edge is what tells me its PK lock. it is very difficult to lock out Nitrogen due to wide ph uptake ranges, as above. it could be Nute burn, but you would have to be feeding an Ec above 1.5. Which is unlickely due to age of seedling etc.
if acid run off ph 5.5-5.8 with high Ec 2.5 ? flush with a zero feed flush water @Ph 8 @23c (Post tap water conditioning) to drag up soil Ph. And flush down any high Ec reading in the flush water. that is indicated. Warm water with hot kettle before Ph'ing.
if alkaline flush water ph 7.4 ? (Run Off), above 7, flush down with zero nute flush water @23c using a flush of Ph 5.5 with "Nitric Acid".......... keep adjusting untill you get it (Flush water) back down to around 6.5. And an Ec of 1.0-0.9. You will be back in uptake range then. Will take 7-10 days for the "Dames" to show the results.
Then check run off with a flush every 10-15 days in case it moves of again. And keep run off Ec around 0.9, before re feeding commences.
Flush is acid use silica / silicone to bring up Ph, flushing with water 23c@Ph8
Flush is alkaline use nitric acid in flush water at 5.5-5.8 flush water ph, to drag down the "Buffer" salts in medium.
I now run feed Ec's around mid flower, no higher than 0.8-0.9, and plain warm water flush to run off, once in every 5-7 days of feeding low Ec's, keeps on top of 'Un_Used" NPK,or "Soft Mineral Rocks" !! make sure (Important) soil temp is not lower than 21c, temp affects Ph condition.
This is why cocco grows feed at Ph 5.8 to combat alkalinity in coir/cocco etc.... if its a component of a pre made mix, the same applies.
And is proof these pre made mediums are not checked for Ph content. You can do this with 500g of medium before use. flush it and check nute content with Ec meter, and ph of run off before using etc.
Automaster
Last edited:
Thanks for all the help guys, i binned them in the end, 21 days old today and they had hardly grown in the last ten days.
Now that i know how light this soil is i won't make that mistake again.
So the new varieties are, 2 x DP Auto White Widow and 2 x WoS Afghan Kush Ryder.
The AWWs are in glass of water now and i'm trying to order the AKRs from Attitude but their Visa Debit button is crashing the system!
Cheers,
steely
Now that i know how light this soil is i won't make that mistake again.
So the new varieties are, 2 x DP Auto White Widow and 2 x WoS Afghan Kush Ryder.
The AWWs are in glass of water now and i'm trying to order the AKRs from Attitude but their Visa Debit button is crashing the system!
Cheers,
steely
Grim Reefer
DWC & LST
Looks like im not the only ones with problems this year. hopefully everything is sorted for you now this time man. Best of luck.
woody
Cultivators Club
There was a another thread about attitude having payment problems so they set up a sister site called the choice seedbank. Someone on here checked with them and it was legit. Good luck on the next run
