Leafs curling after flip to flower  

  RSS

Illinoismedgrower
Terpinolene
New Member
Points:58
Joined: 4 months ago
Posts: 4
October 9, 2019 3:13 pm  

Any help would be appreciated,I am in DWC using Canna Aqua nutrients, temp during light on is 76f with 60% RH under CFL in a 2x4x9 tent. Ph is 5.8 to 6.4 EC is 1.6 water temp 69f after I went from 18/6 to 12/12 my leafs are curling up and a few rust spots. Is this stress or cal mag issue?

F29637B2 3B3D 4206 AB4C 0F531BB1C9DF

 


Macky
Valencene Admin
Mentor
100 Likes
250 Likes
500 Likes
1K Likes
2.5K Likes
5K Likes
Grow Off Diary
Youtube 1K Views
Veteran
Points:41646
Joined: 1 year ago
Posts: 4178
October 9, 2019 3:34 pm  

Seeing leaves curl up like that is called canoeing mate, it is usually a sign of heat stress, but at 74f, that's not really too hot, and the cfl wont give off a lot of heat either. 

Ec seems fine for DWC too, maybe a touch too high but not much, that should not be the problem either hmmmmm.......

Cal Mag is possibly an issue, at this stage, as the plant first head into flower, i like to spray them with some epsom salts, this helps combat the extra cal mag it needs during the changeover i have found.

The res temps could be just a little cooler, 18c, but 20 should be fine too. 

So, epsom salts for the foliar feed. That would be my suggestion. But TBF mate, the plants do look fine.

How is your airstone looking? still getting plenty of air to the roots right? not blocked or trapped in the root ball?

 

"True guidance is like a torch in the forest, it doesn't show everything, but gives enough light for the next steps to be safe" -Swami Vivekananda


Illinoismedgrower
Terpinolene
New Member
Points:58
Joined: 4 months ago
Posts: 4
October 9, 2019 4:32 pm  

@macky

I will check my air stones the roots are massive and could be blocking the stone.

Thanks!


3plantsPete, Zombie Nation, Macky and 1 people liked
ReplyQuote
Zombie Nation
Linalool Admin
2.5K Likes
Plant of the Month Winner
Mentor
Diary Writer
100 Likes
250 Likes
500 Likes
1K Likes
Grow Off Diary
Legendary
Points:20351
Joined: 10 months ago
Posts: 990
October 9, 2019 6:46 pm  
Posted by: @illinoismedgrower

@macky

I will check my air stones the roots are massive and could be blocking the stone.

Thanks!

Also make sure the CFL is clean, they do get very hot when dusty and mine is, lol...I have the same issues with 2 clones under a 300w CFL


ReplyQuote
Illinoismedgrower
Terpinolene
New Member
Points:58
Joined: 4 months ago
Posts: 4
October 9, 2019 7:15 pm  

@zn

Will do, sorry I wrote cfl I meant CMH


Zombie Nation
Linalool Admin
2.5K Likes
Plant of the Month Winner
Mentor
Diary Writer
100 Likes
250 Likes
500 Likes
1K Likes
Grow Off Diary
Legendary
Points:20351
Joined: 10 months ago
Posts: 990
October 9, 2019 7:21 pm  
Posted by: @illinoismedgrower

@zn

Will do, sorry I wrote cfl I meant CMH

In which case , its quite likely heat stroke, lol...how far away is your CMH (not CFL ;)) from the canopy and where are you measuring temps from ??

I have a dual 630w CMH and its 20" above the canopy with an oscillating fan blowing between, still I get a few leaves canoe but they get used to it usually


ReplyQuote
Illinoismedgrower
Terpinolene
New Member
Points:58
Joined: 4 months ago
Posts: 4
October 9, 2019 7:24 pm  

@zn

I’m 24” above canopy and have 2 sensors at canopy height with two vivosun 20watt 6” oscillating fans blowing across the canopy.


We have guides to growing cannabis, cannabis grow dairies that cover growing weed in hydroponics, soil and coco. Find the help you need, by either, using the search box, or asking for help in the forum.

Our cannabis growers website also has competitions where you can win free weed seeds. As a member you will also have discount codes for cannabis seeds, and LED grow Lighting.
Our Cannabis Growers Forum is for educational purposes and we encourage our members to check their country of residence legislation before germinating a marijuana seed.

This site is here because we want to help you grow your own cannabis for personal use. Therefore, any member who is suspected of growing cannabis for commercial gains will be banned immediately.

Please read our forum rules, and enjoy the site.

Percys Grow Room Facebook Page, Cannabis grower forum fb page,
Percys Grow Room Twitter,
Percys Grow Room Instagram

Find us on all social networks! Just search for Percys Grow Room

 

percysgrowroom March 13, 2019