Hoping calcium deficiency

[SweetMeat]

I used cal mag once on my plants and no nutes. I used cal mag once and I started seeing those spots and I stopped and have only gave mine ph water. I just hate using anything because I always mess something up lol.

Bubbled tap water is all I’ve used for 3 weeks now because I didn’t dilute the compost tea and they got too much nitrogen. They turned really dark green and clawed on me. I do use Recharge every other watering, but that’s it. So I have added Cal-Mag at about 2/3 the recommended dosage the last two feedings because I thought it was a calcium deficiency. After the tea incident, I’m now scared to burn the ladies again so I feel ya there.

 

[SweetMeat]

Calmag drops ph of water, calcium and magnesium lock out completely at anything lower than 6.2. So you can feed all you want but plant can't uptake nutes. Next time adding calmag up the ph to 7 and it will correct in pot ph.

My runoff was 6.6 and 740 ppm

 

[Cody802]

Calmag drops ph of water, calcium and magnesium lock out completely at anything lower than 6.2. So you can feed all you want but plant can't uptake nutes. Next time adding calmag up the ph to 7 and it will correct in pot ph.

Thanks for the info! I will try this for sure

 

[LazyNhazy]

My runoff was 6.6 and 740 ppm

What was water ph going in?

 

[SweetMeat]

What was water ph going in?

6.7 and with 3ml of cal-mag it put my ppm at 340.

 

[LazyNhazy]

Best run off test,

Water slowly till slight run off with ro or lowest ppm water available.

Walk away for 15-20 minutes then come back and water again slowly till run off, catch that run off, measure and compare.

If ph going in is 7 and water coming out is 6.5 your medium is closer to 6.

Next thing to do would be let it sit 15-20 minutes again and repeat until ph is up to a 6.8.

Then continue a 6.8 until ready for harvest. Same goes above for too high of ppm, just flush with ro until ppm is in ideal range. For me that has been no higher than 600 even for massive autos. Hard to tell in pics but I'm thinking you need to be in 450 range. But pics can be deceiving on actual size.

 

[SweetMeat]

Best run off test,

Water slowly till slight run off with ro or lowest ppm water available.

Walk away for 15-20 minutes then come back and water again slowly till run off, catch that run off, measure and compare.

If ph going in is 7 and water coming out is 6.5 your medium is closer to 6.

Next thing to do would be let it sit 15-20 minutes again and repeat until ph is up to a 6.8.

Then continue a 6.8 until ready for harvest. Same goes above for too high of ppm, just flush with ro until ppm is in ideal range. For me that has been no higher than 600 even for massive autos. Hard to tell in pics but I'm thinking you need to be in 450 range. But pics can be deceiving on actual size.

I’m using Natures Living Supersoil which is posed to be a just water all the way to harvest and I’ve been adding Recharge for some microbial action. So other than the compost tea burn it’s just been bubbled over night tap water (Ph 8.1 and 170 ppm from tap) with the Recharge every other watering. The last 2 waterings have had an added 3ml of cal-mag because of the spots showing up.

Thanks for the tip. Next time I water I will test with that method and see where we sit.

 

[Waira]

- a wild mix of mediums here isn't wise, especially with coco,... worse, soils are very dubious for quality, often badly acidic.. #1 problem soil I see here... some get OK bags, other's don't,... Some coco is OK, as it's a common component in some soils, but those are engineered to deal with coco's unusual CEC properties.... How much went in?
Compost tea is not a complete balanced feed, missing several key nutes in fact,... what "TLO" is in there isn't enough to compensate either,...
.... symptoms look like Ca defc. to me, but P defc. may be in play too; the do have some overlap in presentation too,...
.... the run-off pH is not an accurate indication of actual in-pot pH, too many influencing factors skewing the results... even the best method of r-o testing is still a crude estimate (need to use pure water, nothing else...RO/Di that is)... that said, because this result isn't totally wacko, pH may be OK in-pot still,.... get a good soil pH probe, like the Accurate 8.... nothing beats in-pot direct readings!
... start feeding lightly with a base bloom nute, something complete in nute profile,... stay on the Ca-Mg too...

 

[SweetMeat]

- a wild mix of mediums here isn't wise, especially with coco,... worse, soils are very dubious for quality, often badly acidic.. #1 problem soil I see here... some get OK bags, other's don't,... Some coco is OK, as it's a common component in some soils, but those are engineered to deal with coco's unusual CEC properties.... How much went in?
Compost tea is not a complete balanced feed, missing several key nutes in fact,... what "TLO" is in there isn't enough to compensate either,...
.... symptoms look like Ca defc. to me, but P defc. may be in play too; the do have some overlap in presentation too,...
.... the run-off pH is not an accurate indication of actual in-pot pH, too many influencing factors skewing the results... even the best method of r-o testing is still a crude estimate (need to use pure water, nothing else...RO/Di that is)... that said, because this result isn't totally wacko, pH may be OK in-pot still,.... get a good soil pH probe, like the Accurate 8.... nothing beats in-pot direct readings!
... start feeding lightly with a base bloom nute, something complete in nute profile,... stay on the Ca-Mg too...

I showed some pics to a buddy and he said they were starving. I used Nature’s Living Supersoil which according to him can’t possibly have more than 4-5 weeks of nutrients in them.

- a wild mix of mediums here isn't wise, especially with coco,... worse, soils are very dubious for quality, often badly acidic.. #1 problem soil I see here... some get OK bags, other's don't,... Some coco is OK, as it's a common component in some soils, but those are engineered to deal with coco's unusual CEC properties.... How much went in?
Compost tea is not a complete balanced feed, missing several key nutes in fact,... what "TLO" is in there isn't enough to compensate either,...
.... symptoms look like Ca defc. to me, but P defc. may be in play too; the do have some overlap in presentation too,...
.... the run-off pH is not an accurate indication of actual in-pot pH, too many influencing factors skewing the results... even the best method of r-o testing is still a crude estimate (need to use pure water, nothing else...RO/Di that is)... that said, because this result isn't totally wacko, pH may be OK in-pot still,.... get a good soil pH probe, like the Accurate 8.... nothing beats in-pot direct readings!
... start feeding lightly with a base bloom nute, something complete in nute profile,... stay on the Ca-Mg too...

A buddy told me they were starving. He said my soil prolly ran out of nutes 2 weeks ago. So I did start feeding at 1/2 strength Green Planets GP3 series. Ppm was 710 but out of tap is 270. Hopefully we can still finish strong. Thanks for knowledge drop. I love this network of people!!

 

[SweetMeat]

- a wild mix of mediums here isn't wise, especially with coco,... worse, soils are very dubious for quality, often badly acidic.. #1 problem soil I see here... some get OK bags, other's don't,... Some coco is OK, as it's a common component in some soils, but those are engineered to deal with coco's unusual CEC properties.... How much went in?
Compost tea is not a complete balanced feed, missing several key nutes in fact,... what "TLO" is in there isn't enough to compensate either,...
.... symptoms look like Ca defc. to me, but P defc. may be in play too; the do have some overlap in presentation too,...
.... the run-off pH is not an accurate indication of actual in-pot pH, too many influencing factors skewing the results... even the best method of r-o testing is still a crude estimate (need to use pure water, nothing else...RO/Di that is)... that said, because this result isn't totally wacko, pH may be OK in-pot still,.... get a good soil pH probe, like the Accurate 8.... nothing beats in-pot direct readings!
... start feeding lightly with a base bloom nute, something complete in nute profile,... stay on the Ca-Mg too...

5 gal pots and each has a gal of coco.
2 gal Ocean Forest, 1 gal Happy Frog, 1 gal Loco Coco, 1/2 gal perlite, and roughly 1/2 gal Natures Living Supersoil on the bottom 1/3.