Girls are not feeling well.

C

Christine20

Member
Hello family,

I am dealing with a very strange problem. This growth I was very careful about everything. Ph, nutrients,temperature. Although my efforts the girls are not in a pretty good shape. The roots are brownish (not white) and they stoped growing. They are not dead but not alive too. I really don't know what the problem is. I am growing in a drip hydropic system in calay pebbles .I am with my ph around 5.8 - 6.2. Ec levels around 0.8 using canna nutes, reverse osmosis water .They are eating 15 min/1hour and in the night time 15min/3 hours. After I saw some yellow leafs I looket at some online charts with different deficiencies and it looks like a magnesium deficiency. I the added 2ml/10L of calMag but nothing happend.


Please if you know what s going on hit me whit some ideas.



Have a beautiful day folks.
 

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Failmore

Failmore

Well-Known Member
Do you drain to waste or back to a res?

If you are using ro water you should have been using cal/mag from the start.

It takes several days for the top of the plant to show a change from something you did in the res.

I found watering every hour caused root issues for me. The rocks hold a lot of water. I would say no matter what give it 2 hours between watering.
 
curious2garden

curious2garden

Well-Known Mod
Staff member
Christine20 said:
Hello family,

I am dealing with a very strange problem. This growth I was very careful about everything. Ph, nutrients,temperature. Although my efforts the girls are not in a pretty good shape. The roots are brownish (not white) and they stoped growing. They are not dead but not alive too. I really don't know what the problem is. I am growing in a drip hydropic system in calay pebbles .I am with my ph around 5.8 - 6.2. Ec levels around 0.8 using canna nutes, reverse osmosis water .They are eating 15 min/1hour and in the night time 15min/3 hours. After I saw some yellow leafs I looket at some online charts with different deficiencies and it looks like a magnesium deficiency. I the added 2ml/10L of calMag but nothing happend.


Please if you know what s going on hit me whit some ideas.



Have a beautiful day folks.
Click to expand...
You have a Ca and Mg def and you won't see any difference in the already damaged leaves. They won't improve but you should not see more damage. I don't know what Ca/Mg additive you are using but 2ml/10l could be low, check the suggested rates. I use GH CaliMagic and give the full 5 ml/4l usually. Don't worry about overwatering in hydro.
 
dbz

dbz

Well-Known Member
Christine20 said:
Hello family,

I am dealing with a very strange problem. This growth I was very careful about everything. Ph, nutrients,temperature. Although my efforts the girls are not in a pretty good shape. The roots are brownish (not white) and they stoped growing. They are not dead but not alive too. I really don't know what the problem is. I am growing in a drip hydropic system in calay pebbles .I am with my ph around 5.8 - 6.2. Ec levels around 0.8 using canna nutes, reverse osmosis water .They are eating 15 min/1hour and in the night time 15min/3 hours. After I saw some yellow leafs I looket at some online charts with different deficiencies and it looks like a magnesium deficiency. I the added 2ml/10L of calMag but nothing happend.


Please if you know what s going on hit me whit some ideas.



Have a beautiful day folks.
Click to expand...
You said you have brown roots as well, what are the res temps?
 
C

Christine20

Member
Failmore said:
Do you drain to waste or back to a res?

If you are using ro water you should have been using cal/mag from the start.

It takes several days for the top of the plant to show a change from something you did in the res.

I found watering every hour caused root issues for me. The rocks hold a lot of water. I would say no matter what give it 2 hours between watering.
Click to expand...
Back to the reservoir. I will try to water every 2h from now. Hpbe they get batter.
 
C

Christine20

Member
curious2garden said:
You have a Ca and Mg def and you won't see any difference in the already damaged leaves. They won't improve but you should not see more damage. I don't know what Ca/Mg additive you are using but 2ml/10l could be low, check the suggested rates. I use GH CaliMagic and give the full 5 ml/4l usually. Don't worry about overwatering in hydro.
Click to expand...
The suggested rates are 2.5/10l and 5/10l. It is a very concentrate solution.
 
curious2garden

curious2garden

Well-Known Mod
Staff member
Then I'd only up the dose if you see the damage progressing. I'd also consider what @dbz and @rkymtnman said about root issues. If the root coloration is from your nutrients (mine turned a bit brownish using GH when I was in NFT) you're fine, if not you may wish to consider using pool shock or another disinfectant in your reservoir.

Another problem you could be running afoul of with a warmer res is the oxygen dissociation curve. Here's a good post on it:
www.royalqueenseeds.com

Dissolved Oxygen: The Key to Thriving Hydroponic Weed Plants - RQS Blog

Hydroponic cannabis plants depend on optimal dissolved oxygen (DO) levels for health and productivity. Discover ways to boost DO levels to send yields soaring.
www.royalqueenseeds.com www.royalqueenseeds.com

The take away is to run your res closer to 62/63 than 70.
 
Last edited:
C

Christine20

Member
curious2garden said:
Then I'd only up the dose if you see the damage progressing. I'd also consider what @dbz and @rkymtnman said about root issues. If the root coloration is from your nutrients (mine turned a bit brownish using GH when I was in NFT) you're fine, if not you may wish to consider using pool shock or another disinfectant in your reservoir.

Another problem you could be running afoul of with a warmer res is the oxygen dissociation curve. Here's a good post on it:
www.royalqueenseeds.com

Dissolved Oxygen: The Key to Thriving Hydroponic Weed Plants - RQS Blog

Hydroponic cannabis plants depend on optimal dissolved oxygen (DO) levels for health and productivity. Discover ways to boost DO levels to send yields soaring.
www.royalqueenseeds.com www.royalqueenseeds.com

The take away is to run your res closer to 62/63 than 70.
Click to expand...
Really good article. Will try to lower the temp by moving the res away. Hope will win some
 
gr865

gr865

Well-Known Member
Just a few points.
Using RO water, you need to bring your ppm to around 120 using Cal/Mag and Epsom prior to adding your base nutes.
I would add 1 gram of Epsom per gallon in the irrigation water and also use it in mister and mist the plants 4 to 6 times a day with lights on.

If your growing Hydro drip over clay stones, may i ask why you are using Canna Coco nutes. They look like they may be getting too much Nitrogen.
I will send you a sheet, Less is More, I did using Canna nutes, I do grow in coco.
 
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