Running DWC and my plants sweet spots depending on strain is around 1150ppm using tap water. I have a strain now that sweet spot is around 1050ppm and it gets burnt tips, then gets worse as flowering goes on with the ppm staying the same (ppm NOT rising, staying steady)... My question is should I try adding some cal/mag??
Hydro guy said nute burn and cal/mag def looks the same
- Thread starter Meast21
- Start date
I would lower my nutrient levels before adding cal mag. If it is nute burn then your going to make things worse. From what I've seen nute burn starts at the tips of leaves whereas Calcium deficiency can be seen nearer the center of the leaf and magnesium deficiency gives you a yellowing pattern effect
calmag will make your ppm go up big time
Jypsy Dog
Well-Known Member
If you burned her... Flush. Why Cal/Mag? Your tap water and Nutes should have more than enough Calcium. And it's 2ml/Gallon https://www.sensigarden.com/calcium-deficiency-marijuana/
Plant is already at lower ppm levels (around 1050 and staying steady)
Jypsy Dog
Well-Known Member
Then your pH is off. What's your run off? ALWAYS start with pH when an issue pop's up.
1050ppm on what scale, 500 or 700? If it's the 500 scale then that is still over a 2 EC which can be very high for many strains.
BobCajun
Well-Known Member
Leaves get brown tips just if the air is dry and being moved quickly. But if you're using tap water that may be part of it. Obviously most tap water has plenty of cal/mag, or at least cal so that would be the last thing you'd want to add. My guess is it's nothing worth being concerned about, brown leaf tips. If you're doing DWC with tap water you're lucky that's as bad as it got actually.
BTW if there's chlorine in the water you can get rid of it easily by simply putting a small amount of calcium ascorbate in, only about 1 mg per liter is required but more won't hurt, within reason. You can buy the pure powder in health stores cheaply. It's also good to take yourself for vitamin C. Vitamin C is actually helpful to plants and so is the calcium, though it would be a minuscule amount. But as soon as you put that in and mix it the chlorine smell is completely gone. It turns it into chloride, which is not harmful other than in large amounts. It's a good way to instantly eliminate chlorine instead of having to let the water sit around for a few days to naturally turn into chloride or dissipate in the air.
BTW if there's chlorine in the water you can get rid of it easily by simply putting a small amount of calcium ascorbate in, only about 1 mg per liter is required but more won't hurt, within reason. You can buy the pure powder in health stores cheaply. It's also good to take yourself for vitamin C. Vitamin C is actually helpful to plants and so is the calcium, though it would be a minuscule amount. But as soon as you put that in and mix it the chlorine smell is completely gone. It turns it into chloride, which is not harmful other than in large amounts. It's a good way to instantly eliminate chlorine instead of having to let the water sit around for a few days to naturally turn into chloride or dissipate in the air.
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ThaMagnificent
Well-Known Member
Don't confuse chlorine with chloramine
BobCajun
Well-Known Member
I found this in the wiki page for chloramine.
"Ascorbic acid and sodium ascorbate
Ascorbic acid (vitamin C) and sodium ascorbate completely neutralize both chlorine and chloramine, but degrade in a day or two, which makes them usable only for short-term applications. SFPUC determined that 1000 mg of vitaminC tablets, crushed and mixed in with bath water, completely remove chloramine in a medium-size bathtub without significantly depressing pH."
ThaMagnificent
Well-Known Member
Interesting...I was using tap water with my flood buckets and was getting all kinds of deficiencies. I thought it was due to the chloramine or maybe even the alkylidity of the water because I live in an area with alot of limestone. My pH would shoot up every 12 hours like crazy and the swings would wreak havoc on the plants. Switched to RO and no issues since. I don't even pH anymore
Jypsy Dog
Well-Known Member
Been using it for 2 years now. I mix 1 Tbl. in a sports bottle and put 2 drops per gallon of tap water. Works Great.
Budley Doright
Well-Known Member
Some well water has too much calcium and mag so it will in fact lock both out (over simplified lol), my situation, the amino acid supplements that I use have really helped in my situation with the plants being green and healthy to chop. Or yes as mentioned RO water, then your starting with a clean canvass so to speak.
Budley Doright
Well-Known Member
But once the water is treated it's good to go right? When u say it degrades does that mean the chlorine will return? Sorry but I don't deal with any chlorine, I'm on shitty well water lol.
Jypsy Dog
Well-Known Member
It won't return... Bonds are broken in the molecules. And that happens the instant it's added.
Roger A. Shrubber
Well-Known Member
^ this, i think the article quoted was talking about a water supply system, meaning it would have to be reapplied on a regular basis to remain effective, once its gone, it aint coming back
Budley Doright
Well-Known Member
gotchya, that's why I asked, didn't think it was coming back just wanted to check
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