discodance
Member
Btw, how much did you yield per plant with those values?
Constant nute burn @ Low EC
- Thread starter discodance
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shawnery
Well-Known Member
You should always allow your ph to swing from the bottom number to the top number, or at least that is what I have read with good reasoning.
Different nutrients get absorbed perfectly at different ph values. Not saying staying at 5.8 isn't the optimal number but it's an average not perfect, from my understanding.
Different nutrients get absorbed perfectly at different ph values. Not saying staying at 5.8 isn't the optimal number but it's an average not perfect, from my understanding.
discodance
Member
Yeah, I'm gonna try doing that before supplementing with cal-mag. Will post updates in case it might help someone with a similar issue.
5BY5LEC
Well-Known Member
Well nothing yet and this is my first grow. But I can promise you the are not underfed.
You tell me. That is two plants in a 5x5 and some are almost as big as my fist. A good 10-12" of solid dense nug.
I am hoping a half# per plant maybe. I dunno. Its a lot. 600 PPM max and now I am running 430.
See those burned tips? That's what 700 ppm on the .5 scale got me.
If your PH does not leave 5.4 to 5.8 its probably not your PH. Unless your leaving it at 5.4 for three days.
ALL nutrients are absorbed just fine at 5.8
discodance
Member
So you reckon it's due to overfeeding early and possibly a deficiency of calcium?
discodance
Member
Here are some update photos:
discodance
Member
That's what I thought initially but it can't be due to heat because my temps are low and the lights are pretty far from the canopies.
shawnery
Well-Known Member
Do you have a cell phone? Download this app or if you have apple the equivalent. Place the phone level with the top of the plant. You really shouldn't be to far over, I think, 20,000 not that plants even understand lumens but it's a way to judge to much or to little of the right wave length.
https://play.google.com/store/apps/details?id=com.tsang.alan.lightmeter
https://play.google.com/store/apps/details?id=com.tsang.alan.lightmeter
ANC
Well-Known Member
If you can keep that plant alive long enough to take a cutting you can clean up with a copper spray you could start over. I suspect it has something that needs to get purged.
I would use a nutrient film recirculating or flood and drain if it gets warm and you don't have a chiller
I would use a nutrient film recirculating or flood and drain if it gets warm and you don't have a chiller
Heisengrow
Well-Known Member
Not burn.there deficient.also stop spilling shit on the leaves.
discodance
Member
I've never spilled anything on the leaves. I recently had my tap water tested at a chemist and it contains an abundance of calcium and magnesium and other micro elements. So I really don't understand how they'd be deficient, especially considering that I've been feeding them about 500ppm of nutes since week 2. The plants are still growing and fast. Stems are thick and healthy and so are the roots, yet the leaves look like shit. The old ones get crispy and burnt looking and some of the newer fan leaves have started pointing downwards at their tips.
5BY5LEC
Well-Known Member
I read that the form of calcium and magnesium found in your tap water is not an easily used molecule.
I still say calmag. It would explain the stuff you get in flower also.
Take a look at the picture of your flower leaf you posted and then look at a cannabis leaf chart for "advanced calcium deficiency"
Forget whats in your tap or use RO.
I still say calmag. It would explain the stuff you get in flower also.
Take a look at the picture of your flower leaf you posted and then look at a cannabis leaf chart for "advanced calcium deficiency"
Forget whats in your tap or use RO.
discodance
Member
So I've managed to find a table of the composition of all micro and macro determinands found in my tap-water. At the bottom of the table, under "OTHER" It shows that the amount of Calcium available in the water is around 12mg/l for my specific suburb. Is this an acceptable amount or should I definitely be supplementing?
The red area contains the information specifically for my suburb.
The red area contains the information specifically for my suburb.
discodance
Member
Thank you homie <3 Seems I've finally found the answer. I really appreciate you helping me throughout my journey, all of you. Hope I can return the favor somehow, some day.
discodance
Member
I’ve opted to using the flora hardwater micro for now which contains 42mg/l of Calcium. I’ve seen significant recovery and improvement within the last three days. I’ll keep documenting and keep you guys updated.
