yellowing leaves after adding cal/mag

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Tyson457

Well-Known Member
I am running 5 gallon buckets with air stones and everything has been good for the first 3 weeks. This past Monday it was time to clean buckets change water and add fresh round of nutes to start week 4 of veg. The only thing different this time was I added a couple of capfuls of cal/mag to each bucket. When I pulled net pod off bucket I noticed the roots were turning brown and there was some yellowing on the leaves. I am using full line of fox farm nutes. If anyone can help solve this problem it would be greatly appreciated. This is only my 2nd grow so I am still learning. There is a pic attached of what one of the plants looks like. IMG_20141219_102031.jpg
 
Jimdamick

Jimdamick

Well-Known Member
I think the Calmag supposed damage is just a coincidence. The roots couldn't react that rapidly to it. Your water has to be the issue, and that is where I would look first. Temperature of water/ air to roots/ beneficial microbes, etc. I would clean off the rotten roots, do a flush with 1 cup peroxide to 3 gallon water (lightly nuted), and that should be good enough, at least to make it to the end. Good luck
 
Dr. Who

Dr. Who

Well-Known Member
See how that's spread out in the plant?

I'll say you had a Nute issue tied to a pH problem and I see some in the new growth yet. It looks like it's tried and is trying to recover.......So.......

You should to adjust the pH of the solution everyday at lights on to 5.8.
Back off your nutrient by 50% for a week and look at the new growth. Come back to normal? Continue on from there and up % as needed to improve if need be.

I have never "seen" a hydro plant do that exactly the way yours is......Soil plant,,, oh yeah!

Like Jim said,,,,water could very well be involved here!!
What kind of water do you use?
 
Jimdamick

Jimdamick

Well-Known Member
Tyson457 said:
I am running 5 gallon buckets with air stones and everything has been good for the first 3 weeks. This past Monday it was time to clean buckets change water and add fresh round of nutes to start week 4 of veg. The only thing different this time was I added a couple of capfuls of cal/mag to each bucket. When I pulled net pod off bucket I noticed the roots were turning brown and there was some yellowing on the leaves. I am using full line of fox farm nutes. If anyone can help solve this problem it would be greatly appreciated. This is only my 2nd grow so I am still learning. There is a pic attached of what one of the plants looks like. View attachment 3315973
Click to expand...
Another point. Sush! (don't tell anybody I said this), BUT, your plant need's trimming. Cut all the dead, or soon to be dead leaves off of that mother.fucker. Start at the bottom branches, check out which branches have shitty bud, snip them and throw them away, they are useless, and divert energy from more useful sites. Don't get me wrong, about cutting all branches, that is not advisable. I have a plant right now that has a bottom branch that has 3 buds on it that are fantastic ( I cut the little ones off)
Get good light on buried bud by cutting THE leaf above it. It will turn that buried bud that was yellow usually(especially lower bud sites) into something nice in a week (sell for more MONEY), or give away to someone needy.
 
T

Tyson457

Well-Known Member
We use RO water.


Dr. Who said:
See how that's spread out in the plant?

I'll say you had a Nute issue tied to a pH problem and I see some in the new growth yet. It looks like it's tried and is trying to recover.......So.......

You should to adjust the pH of the solution everyday at lights on to 5.8.
Back off your nutrient by 50% for a week and look at the new growth. Come back to normal? Continue on from there and up % as needed to improve if need be.

I have never "seen" a hydro plant do that exactly the way yours is......Soil plant,,, oh yeah!

Like Jim said,,,,water could very well be involved here!!
What kind of water do you use?
Click to expand...
 
Terry385

Terry385

Well-Known Member
"It is general organics calmag+"
calcium and magnesium combined with organic acids and sugar
 
T

Tyson457

Well-Known Member
Here is a pic of the roots,I smelled them and they don't stink and they don't feel slimey. Temp in my water barrel was 75 and pH in buckets was at 4.7. IMG_20141219_162105.jpg


Dr. Who said:
See how that's spread out in the plant?

I'll say you had a Nute issue tied to a pH problem and I see some in the new growth yet. It looks like it's tried and is trying to recover.......So.......

You should to adjust the pH of the solution everyday at lights on to 5.8.
Back off your nutrient by 50% for a week and look at the new growth. Come back to normal? Continue on from there and up % as needed to improve if need be.

I have never "seen" a hydro plant do that exactly the way yours is......Soil plant,,, oh yeah!

Like Jim said,,,,water could very well be involved here!!
What kind of water do you use?
Click to expand...
 
Dr. Who

Dr. Who

Well-Known Member
LOW pH!!!! This IS effecting you nutrient uptake!
pH to 5.8
pH range for hydro is 5.8 - 6.2 (we will most likely get someone who says 5.5-5.8,,,,,they most likely came up with their own range from nutrient pH uptake charts.....DO the 5.8 to 6.2)
Try very hard to keep res/pot temps to 70F or less.

@Jimdamick LOL, bro. Jorge is having a "no trim" fit at you, all the way from Spain....
 
T

Tyson457

Well-Known Member
The guy who was kind of teaching me how to grow said he never trims any of his plants but i should've known better cuz everything else he told me to do hasnt been worth a fuck either. So when I do the bottom trimming on the plants will it put them into shock if I do too much at one time? Or do I just do a lil bit each day? Oh and yes brother I used some pH up and made sure every bucket was at 5.8. When I check plants today should is OK to add cal mag since I am using RO water? Thanks for all the help brothers.

Dr. Who said:
LOW pH!!!! This IS effecting you nutrient uptake!
pH to 5.8
pH range for hydro is 5.8 - 6.2 (we will most likely get someone who says 5.5-5.8,,,,,they most likely came up with their own range from nutrient pH uptake charts.....DO the 5.8 to 6.2)
Try very hard to keep res/pot temps to 70F or less.

@Jimdamick LOL, bro. Jorge is having a "no trim" fit at you, all the way from Spain....
Click to expand...
 
chuck estevez

chuck estevez

Well-Known Member
Tyson457 said:
Don't really understand the difference between the two? The lady at hydro store recommended the calmag+.
Click to expand...
the organic one has organic fungi and bacteria that don't work well in a DWC environment,especially if your res temps get to high. the other is made for hydro, that is why there is 2 products from same company.
 
ganjaman87

ganjaman87

Well-Known Member
Looks like you've got pythium. I was battling it from adding organics to my DWC. stop using the Organic Calmag and get one for hydroponics
 
D

Dragon1381

Member
I know this is old but i remeber reading that adding a gram a baking soda to 5 gallons of water solved the ph in hydro problems
 
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