Urgent help needed please

Thanks dude, so what do you think I should do with this messed up plant? Should I feed her slightly more and see how she reacts? or should I feed her less and see how she reacts? Because that's about all I can do at the moment, I don't have the time to feed two or three times per day until I get the irrigation system
Whichever route you choose, stick to it for a week or two and see if it gets worse or better, but just change that one variable. In a week or two you should know if that was the correct route. Since your temps are good, 6.0 ph, lights around 500ppfd then that pretty much leaves ur EC (im assuming your rh% is not some crazy number lol). The one thing that also would concern me is your water source.
 
General hydro products or what ever youre using should list a rule of thumb, like with GH it says up your EC for slower dryback or 1 feed a day. I would stay below 1.5 though.
 

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Whichever route you choose, stick to it for a week or two and see if it gets worse or better, but just change that one variable. In a week or two you should know if that was the correct route. Since your temps are good, 6.0 ph, lights around 500ppfd then that pretty much leaves ur EC (im assuming your rh% is not some crazy number lol). The one thing that also would concern me is your water source.
Thanks dude, my rh% is around 55 - 60% I am following the vpd chart as best as I can. I will keep her running around 1.2 EC for a week and see if it gets any worse than it already is and if it does then I will go back to 1.0 EC? My water source is hard water 0.6 EC but I've never had problems with my water in the past and have got successful harvests with no issues
 
in fact I'm going to drop the EC back down to 1.0 for a week and see how it goes, I'm going to go on the side that they are nutrient burnt like @hotrodharley said because if they are nutrient burnt there will be nothing left of them by next week lol and if it only gets worse then it must be a potassium deficiency
 
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If your top is burning its too much if bottom then its toolittle

That makes sense...and in my case I was having some real mild top burn, and raising the EC did in fact make it worse...Like over night too!!

I just mixed a fresh batch with lower EC....I am in week 6 now and they call for a lowered EC anyways.
 
Your tap water is 0.6 EC and your total EC is 1 right?

Are you using canna coco A + B?
Yeah the tap water is 0.6 EC. The total is 1.2 EC at the moment. And yeah I'm using coco A + B dude, it's not a big plant though, it's twice as small as the others, it's definitely overfed
 
Well .. at 1.2 ec half that's your tap water , you are under feeding.

In veg I run 1.2 ec, water is 0.4, sometimes I go up to 1.4ec.
In flower 1.4 is minimum up to 1.6ec
Like I say, my base water is 0.4.

My feeding is considered light at those levels

You are not feeding enough and maybe this strain is greedy
 
yeah dude I'm in flower and using the bloom version, same for the ph down, it's the bloom version :)
Well I've run Dutch pro and never below 1.4 ec in flower. Like I say I feed light .

I could probably feed at 1.8 ec and still not burn them,

The other thing you need to be 100% on is are you sure your ph meter is calibrated properly
 
Well I've run Dutch pro and never below 1.4 ec in flower. Like I say I feed light .

I could probably feed at 1.8 ec and still not burn them,

The other thing you need to be 100% on is are you sure your ph meter is calibrated properly
I'm in coco and 2 of my plants are perfectly healthy on 1.3 EC and they are massive, this other plant is getting 1.2 EC and it looks totally burned up. It's either that or it's a potassium def, I deleted the images because I got paranoid and I've got no way to bring them back otherwise I would show you how they look
 
Well I've run Dutch pro and never below 1.4 ec in flower. Like I say I feed light .

I could probably feed at 1.8 ec and still not burn them,

The other thing you need to be 100% on is are you sure your ph meter is calibrated properly
I know what you mean though, I fed my last plants around 1.5 EC in flower and they were fine, but this strain I am doing now is super hard to grow
 
I'm in coco and 2 of my plants are perfectly healthy on 1.3 EC and they are massive, this other plant is getting 1.2 EC and it looks totally burned up. It's either that or it's a potassium def, I deleted the images because I got paranoid and I've got no way to bring them back otherwise I would show you how they look
Yeah I wondered if there'd been an image I'd missed.

Imo it's not that easy to burn plants.
However there's also the possibility of a root issue causing an uptake issue.. since this plants struggling in comparison.
 
Well I've run Dutch pro and never below 1.4 ec in flower. Like I say I feed light .

I could probably feed at 1.8 ec and still not burn them,

The other thing you need to be 100% on is are you sure your ph meter is calibrated properly
Yeah I'm using a bluelabs PH pen and it is calibrated every month. Two of my plants are perfectly fine and healthy, but the other 2 are messed up and I have no idea why. Maybe the other two are just shit inbred seeds or the runts of the pack or some shit?
 
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