whitebb2727
Well-Known Member
I will add I grow organic and got a bad bale of generic promix that I uswd as a base cause all kinds off issues. Ph was all out of whack. I had to dump the rest of the bale in my compost.
Watch me kill plants in Organic Soil
- Thread starter deimos phobos
- Start date
Growitpondifarm
Well-Known Member
Those small square pots are your problem. Those plants need more root space. You can grow big trees in small pots using synthetics but not growing in organic potting soil. Up pot them in your final pots, which I recommend using minimum of 7 gallons, and give them a week or so.
JewelRunner
Well-Known Member
they've definitely outgrown their pots. You can foliar with calmag, fish hydrolysate and silica. If your kelp is bottled it's probably devoid of any micro life... If you decide to foliar you could do a tsp of calmag tsp of fish tsp of silica per gallon, maybe start out with half to 2/3rds that amount and see how they respond. have you checked the soil for pests
I agree with above. Pots are way too small. You can plant directly into your final pot as soon as they sprout. If you have worms in the pot it will not rot. Also, try regular water over RO. I don't have a good reason to switch, other than the fact that its not needed.
deimos phobos
Active Member
Our water is treated with Chloramine, and is considered very hard. PPM out of tap is around 350 with a pH of 8-8.3
Also confused by if I should be pHing
JewelRunner
Well-Known Member
Yeah, use the RO. Those plants have outgrown their pots. Looks like the soil you're using is good... You could add some simple compost tea to your feeding schedule, the plants will live it.
deimos phobos
Active Member
RO is coming out around 7 pH and 20 TDS PPM. After adding organic CaMg+ it’s dropping to 5.6 pH though. Should I be pHing it?
Thank you very much for your help
JewelRunner
Well-Known Member
Ro water drops in ph to the 5-6 range when exposed to oxygen. I never ph mine, if you're concerned you can test runoff water. Don't water until pots are good and light though. It's a lot easier to over water than underwater in soil, and that can cause lockouts. When you repot, water good(preferably with airated compost tea) and don't water again until the pots are pretty light. Teaspoon if calmag per gallon of ro, the fish hydrolysate has some micro life and is good food for the existing stuff in your soil so I would keep using that
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Kassiopeija
Well-Known Member
Hello again, pH on RO is irrelevant since it has such a low electrical conductivity that RO water will simply take on the pH of whatever medium its combined with.
100% pure water is of neutral pH but when exposed to our atmosphere it'll absorb a bit CO2 immediately, which will make it a bit acidic - but that's irrelevant (see above point).
pH 5.6 is too acidic for organic grows. For example, when using the BioBizz soil, the manufacturer states it's optimal to feed pH of 7.2, because the soillife/microbes have a tendency to lower the pH because of their metabolism.
However, I would contact the manufacturer of your supersoil and follow their official directions. Plus - check your pH meters. Hope this helps
100% pure water is of neutral pH but when exposed to our atmosphere it'll absorb a bit CO2 immediately, which will make it a bit acidic - but that's irrelevant (see above point).
That's strange. It should become more alkaline. At least, that's what all my CalMag products do. What's the brand and what does it state what's in it?
pH 5.6 is too acidic for organic grows. For example, when using the BioBizz soil, the manufacturer states it's optimal to feed pH of 7.2, because the soillife/microbes have a tendency to lower the pH because of their metabolism.
However, I would contact the manufacturer of your supersoil and follow their official directions. Plus - check your pH meters. Hope this helps
deimos phobos
Active Member
Thanks for the reply! It is General Organics CaMg+ https://generalhydroponics.com/camg
Should I try a different one?
I wouldn't worry about it. We drink the water all the time. I know bees have been fed chloramine and suffered no ill effects. Your microbes will bouce back quickly too.
Kassiopeija
Well-Known Member
Although it's true that Cl is essential for all plants - the amount needed for most plants is so tiny that it's never included in most fertilizers because it's already abundant in soil + our water. Plus most plants are heavily sensitive to it and will die quickly if overfed (except for "saltplants")
Cannabis is a such chlor-sensitive plant - the osmotic potential of chlor is huge and it'll greatly reduce the plants ability to take in other macronutrients. The plants internal pressure stems greatly from this osmotic pressure which a plant derives from having a higher electrolyte charge inside the roots than whats in the substrate.
I'm using several products for this, depending on the plants stage and also, if I want to have something to solve in water or if I want to mix into the substrate.
It's also dependant on the Ca:Mg-ratio of your product - I couldn't read out any informations on the link you provided - maybe it's on your bottle?
If its around 4:1 or 3:1 Ca:Mg, and if your plants already are bigger, then you could recharge your OS water by 2/3 parts CalMag + 1/3 EpsomSalt (which is slightly alkaline) - then your pH would also go more alkaline plus the Ca:Mg ratio is shifting towards Mg (in flower thats beneficial + S is also in higher demand in flower)
Something to mix in your substrate chalk meals derived from Dolomite.
Hope this helps
Cannabis is a such chlor-sensitive plant - the osmotic potential of chlor is huge and it'll greatly reduce the plants ability to take in other macronutrients. The plants internal pressure stems greatly from this osmotic pressure which a plant derives from having a higher electrolyte charge inside the roots than whats in the substrate.
No, you need another product to harden your water with it, I'm sorry but since I'm from another continent I don't think I can recommend you a product that's available, so maybe someone else could chime in here.
I'm using several products for this, depending on the plants stage and also, if I want to have something to solve in water or if I want to mix into the substrate.
It's also dependant on the Ca:Mg-ratio of your product - I couldn't read out any informations on the link you provided - maybe it's on your bottle?
If its around 4:1 or 3:1 Ca:Mg, and if your plants already are bigger, then you could recharge your OS water by 2/3 parts CalMag + 1/3 EpsomSalt (which is slightly alkaline) - then your pH would also go more alkaline plus the Ca:Mg ratio is shifting towards Mg (in flower thats beneficial + S is also in higher demand in flower)
Something to mix in your substrate chalk meals derived from Dolomite.
Hope this helps
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Kassiopeija
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deimos phobos
Active Member
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deimos phobos
Active Member
My latest handiwork. This was a healthy, vigorous, booming plant that seems to be dead or dying
It's not rootbound at all, I've looked.. I thought overwatered in the beginning so I let it bone dry and light as a feather.
Still f00ked
RIP
It's not rootbound at all, I've looked.. I thought overwatered in the beginning so I let it bone dry and light as a feather.
Still f00ked
RIP
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Growitpondifarm
Well-Known Member
How big is that container and how long has it been in there ?
deimos phobos
Active Member
It's not rootbound, at all. I've been fishing around in the dirt, if I pulled that container out it would not be full of roots its a guarantee.. but maybe out of food?
I think it's 5 litres
I think it's 5 litres
Growitpondifarm
Well-Known Member
you trying to keep that plant in that pot all the way through?
ChronicWonders.
Well-Known Member
You mean .5? That doesn’t look like a 5 liter. Does it have any root mass if you remove it or are you dealing with root rot? I’d remove it, clean the root mass and repot with new soil. Water it once after repotting and wait 3-4 days to see results.