I'm having issues diagnosing this deficiency

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OG HAZE

Member
I am currently using DWC system with 45L reservoirs. The temp in the room is 30 degress C. with humidity fluctuating between 56-60%. My EC is at 1.4 and ppm (tsd) at 700. I am also using RO water which I believe has eliminated my magnesium and calcium. Which leaves me to believe i'm having a cal-mag deficiency ( and possibly nutrient lockout) I am currently using Advanced Nutrient sensi grow which I have completely igored the PH because it's supposed to be PH perfect. I bought gallons of nestle water because they have both CA and Mag. When I put that into the tank, I noticed they weren't as droopy as before and some of them got a bit greener compared to before

I have now ordered a bottle of CAL-Mag extra from advanced nutrients hoping that will heal my plants. However, I have to wait for it to come in the mail as the closest grow shop to me is over 6 hours away. any advice on what the issue might be and can it be easily fixed? This is week 4 of veg and my previous week 4 of veg have always looked better than this.
 
Renfro

Renfro

Well-Known Member
You should check pH even with "ph perfect" nutes. I tried them for a bit and they were anything but perfect, and I do use RO water. You should use calmag for sure. See how they do when you start giving them cal mag regularly.
 
O

OG HAZE

Member
Renfro said:
You should check pH even with "ph perfect" nutes. I tried them for a bit and they were anything but perfect, and I do use RO water. You should use calmag for sure. See how they do when you start giving them cal mag regularly.
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If i PH with advanced nutrients will I have to worry about nutrient lockout? I am also currently using hydroguard as a preventative from root rot.
 
3rd Monkey

3rd Monkey

Well-Known Member
OG HAZE said:
Can I foliar spray it with epsom salt? And if so, how long do you reckon it would take for them to revive themselves.
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You can foliar spray or add it to the res, or both.

Honestly, you may not see very much recovery, just won't be on the new growth.
 
Aussieaceae

Aussieaceae

Well-Known Member
Ph 6.1 seems fine to me.

I agree, looks like a mag issue.

Which ph perfect are you using?
I've used both the 3part, and the 2part a few years ago.
How much of it are you feeding?
I would have been at about 2mL per litre at that size. Dont think i ever got to 4mL per litre, would've had to be a pretty large plant.

Can't say ph was stable with them either, i had to adjust it all the time.
But ph 6.1 seems pretty good to me.

I'd probably try dissolving 1 or 2tsp of Epsom salts, then adding it straight to your reservoir. See if it responds positively first. Then you can always add a little more later on.
 
C

CannaCountry

Well-Known Member
For the style of grow you're proposing, you need to check and manage your pH. You can't rely on manufacturer's claims; as the old saying goes, if it sounds too good to be true...

Get a handle on your pH, make up for the fact that your RO water is 'empty', and I would do this some other way than relying on Nestle water and be sure your plants are receiving a balanced and complete nutrient solution, which includes the necessary micros.

Read the directions on the Epsom salt, it will tell you how much to use. (If you're not going to adjust your pH correctly, don't bother feeding the Epson in your feed...spray it so the plant's have a chance.) Remember there's a reason why your plants are short...either your pH is whacked (which if you're not adjusting it, it most likely is), you have way too much of some other element causing you an issue or you weren't providing any Mg to begin with. Only you can determine which it is. Next time don't let them go so far before you try to fix them...it will make your battle easier. Good luck.
 
B

Beachwalker

Well-Known Member
OG HAZE said:
If i PH with advanced nutrients will I have to worry about nutrient lockout? I am also currently using hydroguard as a preventative from root rot.
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Assuming everything else is correct I suspect you're seeing lockout now because you're not pHing correctly, as was said above you can't trust the AN nutrient claims, FYI if you search your issue on this website you'll find that this is a fairly common problem with people using that brand of nutrients
 
3rd Monkey

3rd Monkey

Well-Known Member
Beachwalker said:
Assuming everything else is correct I suspect you're seeing lockout now because you're not pHing correctly, as was said above you can't trust the AN nutrient claims, FYI if you search your issue on this website you'll find that this is a fairly common problem with people using that brand of nutrients
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RO water and no Ca or Mg supplements. Could be lockout too, but you can't lockout what you don't have.
 
O

OG HAZE

Member
CannaCountry said:
For the style of grow you're proposing, you need to check and manage your pH. You can't rely on manufacturer's claims; as the old saying goes, if it sounds too good to be true...

Get a handle on your pH, make up for the fact that your RO water is 'empty', and I would do this some other way than relying on Nestle water and be sure your plants are receiving a balanced and complete nutrient solution, which includes the necessary micros.

Read the directions on the Epsom salt, it will tell you how much to use. (If you're not going to adjust your pH correctly, don't bother feeding the Epson in your feed...spray it so the plant's have a chance.) Remember there's a reason why your plants are short...either your pH is whacked (which if you're not adjusting it, it most likely is), you have way too much of some other element causing you an issue or you weren't providing any Mg to begin with. Only you can determine which it is. Next time don't let them go so far before you try to fix them...it will make your battle easier. Good luck.
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How often do you reckon I should do the foliar spray with Epsom for a speedy recovery?
 
B

Beachwalker

Well-Known Member
3rd Monkey said:
RO water and no Ca or Mg supplements. Could be lockout too, but you can't lockout what you don't have.
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Great point and it does look classic Cal & Mag deficient (or possibly just advanced magnesium deficiency?). However I've seen this same issue over and over with AN newts, some might get away with it in soil but they're not likely going to get away with it in hydro, not for long

Edit: op I've had good results treating several days in a row or every other day with a spray of Epsom salts, you'll have to check to see the ratio, I think it's a tablespoon per gallon but check first good luck
 
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3rd Monkey

3rd Monkey

Well-Known Member
Beachwalker said:
Great point and it does look classic Cal & Mag deficient (or possibly just advanced magnesium deficiency?). However I've seen this same issue over and over with AN newts, you might get away with it in soil but you're not going to get away with it in hydro, not for long
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I believe you. Never used ph perfect anything. I have seen quite a few problems with them here like you're saying though. Marketing at its finest.
 
O

OG HAZE

Member
Beachwalker said:
Great point and it does look classic Cal & Mag deficient (or possibly just advanced magnesium deficiency?). However I've seen this same issue over and over with AN newts, some might get away with it in soil but they're not likely going to get away with it in hydro, not for long

Edit: op I've had good results treating several days in a row or every other day with a spray of Epsom salts, you'll have to check to see the ratio, I think it's a tablespoon per gallon but check first good luck
Click to expand...
However, if I start feeding it with cal-mag advanced nutrient in my hydro will i be able to get away with it then?
 
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