Munstergrow.
Member
Cal-Mag Plus by Botanical. It is 5ml to the Gal. I was going to add then water like normal but my plant doesn't need a Gal so I guess I messed up.
Started week 4 of flower. Saw these spots on leaves for 1st time today.
- Thread starter Munstergrow.
- Start date
By my math you overdosed 6 fold, molder chart tells us bot cal and mag excess will inhibit N uptake, and if you did not ph correct you probably messed up your soil pH as well. Keep us updated if more issues start to to show soon you will have to flush your medium, then re apply your dots and give a proper dose of calmag next dryback
Munstergrow.
Member
I will try and flush in the morning. If I can keep this thing alive another 2 weeks I should be ok. Instead of dots I may try Dr Earth fertilizer.
Budzbuddha
Well-Known Member
Well there you go - distilled water.
Budzbuddha
Well-Known Member
What other plant needs or uses distilled water ?
If you ran just straight tap water- your calcium and magnesium would gave been covered and ZERO need to “ compensate “ with calmag.
When you try to guess the right ratio of calmag needed to go back in - you may end up chasing your tail.
RTU soils ( ready to use ) out of bag is ready right from bag - for ANY potted plant. It is not specific to cannabis …. For example - soil in container with a houseplant or tomato plant … you just water it right from the tap.
If you ran just straight tap water- your calcium and magnesium would gave been covered and ZERO need to “ compensate “ with calmag.
When you try to guess the right ratio of calmag needed to go back in - you may end up chasing your tail.
RTU soils ( ready to use ) out of bag is ready right from bag - for ANY potted plant. It is not specific to cannabis …. For example - soil in container with a houseplant or tomato plant … you just water it right from the tap.
Don't rush to flush if new issue do not present themselves. You never know you might get lucky and it's generally easier to do to much then to little.
Been there done that. Add calmag doesn't fix issue, add more calmag lock out my N add more N fuck up my pH plant stops drinking. At then end of the day would have been better off living with the rust spots , did a lot more harm then good
Munstergrow.
Member
I have well water can't use the tap, I use distilled since I started growing but I may just switch to RO water from the store. I don't have an RO system.
What's the issue with your well water that makes it unsafe for your plants? Most the time a breta filter will get ya clean enough
Munstergrow.
Member
Very high in rust & iron. We have to use a lot of water softener with rust remover. I am planning on adding a RO system in the near future.
Nutty sKunK
Well-Known Member
For what it’s worth you have a light calcium deficiency and perhaps some bleaching from the light on the top leaves.
See how they respond with the calmag you gave them. In my experience it takes a few days for calcium deficiencies to stop so wait it out a little.
As jimski mentioned weeks 4-7 is when they seem to like the most calcium so you gotta be proactive.
Plant looks good though don’t panic
See how they respond with the calmag you gave them. In my experience it takes a few days for calcium deficiencies to stop so wait it out a little.
As jimski mentioned weeks 4-7 is when they seem to like the most calcium so you gotta be proactive.
Plant looks good though don’t panic
Munstergrow.
Member
Uploading some pics since it's been a couple of days since I Cal-Mag blasted this thing lol. I have some Bud Bloom coming in today.
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Munstergrow.
Member
MissinThe90’sStrains
Well-Known Member
A little suggestion if I may - I have very hard water where I live, and our home has a water softener too. The softener does make things extra difficult, removing the cal and mag from the water and replacing it with sodium. Our water is almost 600 ppm of salt now, and zero hardness and over 8.0 (tested with test strips for hardness, and a digital aquarium water/salt tester).
I found a cheap RO system that hooks up to the main water line, and costs $50-60. It’s made to be used for aquarium water changes, but I find that it will fill a 5 gallon bucket in about an hour. It reduces my water’s ppm to single digit ppm (measured). I add like 2 ml cal mag per gallon of this RO water and it works well for my situation (living soil).
Typically, you want to use water that’s less than 100 ppm if you can. The Rev recommends and balances his water to about 60 ppm (*True Living Organics* book series). Too few minerals in the water will cause issues with the plant (or fish if it’s an aquarium). Too high of a concentration of minerals can interfere with fertilizer absorption, or cause mineral buildup in your soil - especially containers, where every mistake is magnified, due to the small volume of grow medium.
I found a cheap RO system that hooks up to the main water line, and costs $50-60. It’s made to be used for aquarium water changes, but I find that it will fill a 5 gallon bucket in about an hour. It reduces my water’s ppm to single digit ppm (measured). I add like 2 ml cal mag per gallon of this RO water and it works well for my situation (living soil).
Typically, you want to use water that’s less than 100 ppm if you can. The Rev recommends and balances his water to about 60 ppm (*True Living Organics* book series). Too few minerals in the water will cause issues with the plant (or fish if it’s an aquarium). Too high of a concentration of minerals can interfere with fertilizer absorption, or cause mineral buildup in your soil - especially containers, where every mistake is magnified, due to the small volume of grow medium.
Munstergrow.
Member
I no longer use distilled water and we are getting an RO filtration system, a 5 stage one installed this summer.
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