Is this a phosphorous/calcium deficiency?

Shredder420

Member
Oh yeah, and to stay on topic... just go get some phosphoric acid from autozone or pep boys or some shit like that and make your own pH down if you are that concerned with staying precise. Google for instructions on useage and mixture rates and enjoy super cheap pH down in large quantities. There.... problem solved.
 

bioWheel

Well-Known Member
Vinegar is awesome for plants. Other claims are ridiculous. Just Google it. You'll see a lot of references to it working well. I revived some nearly dead pansies last year getting the PH of my water down with vinegar. It works.
 

209 Cali closet grower

Well-Known Member
Ok, so you don't agree with me, but it is not wrong. many people get along fine with it, and the main point I was trying to make is it should only be used if you have no money for legit shit. If you would have read it comprehensively, then you would have seen that I wrote vinegar can be toxic to plants, but for some people it does work. You were the one posting false info such as saying epsom salts is cal mag, so don't come flaming me because you don't like my opinion. That is all I was clearly doing is stating my opinion, because that is what he asked for and other people have had success with vinegar and lemon juice - I clearly stated I have not personally used this, so again I stated my info was based on what I have heard or read and I am only trying to steer him in the right direction to find out for himself. That is what it really comes down to in growing anything, and the term "weed" means nothing. If you have "weeds" in your garden, they are still angiosperms and gymnosperms, but are not desired in the specific environment. My main point was,
"look, here is what others have said, I have no experience with these and if you want the correct results for your specific grow, then you need to cater to your specific growing needs."
Do your own trial and error, and learn what works for your setup. If you aren't willing to put in the effort to make shit legit, then you will clearly suffer. Yes, you can use vinegar if you really have nothing else, But if you spend the time and do what is proven, such as how I stated the differences between the acids... then things will be easier. There is more than one way to skin a cat, and because I offer an opinion, that is all it is - an opinion. Atleast I am putting multiple alternatives to lowering pH instead of just coming to bash. Do your own research, do your own experiments, otherwise just listening to what everybody says is plain ignorance. google is fucking easy to use and shit, it works for me. Help the OP, give him an answer instead of raggin on somebody trying to help. Every single one of my posts is informative and concise.
never said that-but I'm not here to flame, just I know what can fuck up a grow, just saying.
 

209 Cali closet grower

Well-Known Member
Vinegar is awesome for plants. Other claims are ridiculous. Just Google it. You'll see a lot of references to it working well. I revived some nearly dead pansies last year getting the PH of my water down with vinegar. It works.
yes google soil ph and water ph.

fyi with nutes you are lowing the ph water too.But after a day the soil ph will bring it back up. I have did this test on my cheep ph pen.
 

luckybleu

Well-Known Member
5 bucks buys you a water ph test kit at any fish store my tap water is almost 8 while most bottled water is low 6 range knowing what you are putting in helps, if your soil is weed growing specific like fox farms amoung others , its alreadt ph correct you cant really fuck up putting in 6.5 ph ed water
 

doniawon

Well-Known Member
Ok, I'll cut the molasses back to 1ml/gallon? I believe a tbsp. is 5ml so that should be good? I don't have any calmag and I'm broke as fuck so I'll probably have to find a cheaper alternative to that unfortunately.

epsom doesnt contain calcium.. sorry i was wrong.. mag will aid in uptake though! maybe a calcium vitamin crushed added to the mix?
 

SwagstaffBud

Active Member
my bad, it was doniawon who said that.. I got avatars confused.

looks like there are plenty of good answers on here and OP should have something to go off of by now. Let us know what you decide to go with and how it does. Thanks to all
Thanks, yes there's tons of helpful info, it's all much appreciated. Anyways, I'm going to probably get something cheap at walmart for now in the meantime- probably lemon juice or vinegar. Just because I need something now and it's all I can afford, so I might as well risk it with just a little, and soon when I can get some I'll get sulfuric/phosphoric acid or some pH down if I can get that instead. The pH is locking out the calcium so before I feed it anymore I want to get the pH down. How long will it take to recover, a week maybe?
 

SwagstaffBud

Active Member
what's you ph?If 7 you will be fine.

never mind, saw your post, for soil 7.5 will be okay.If your sure that's it.
I'm pretty sure, as I've fed it twice this week and it's only gotten worse. More of the upper/middle leaves are curling upwards at the tips and turning a purpl/brown color starting at the tips as well. Considering it was fed twice I'm thinking lockout. I'm gonna flush it probably as well, with lemon or vinegar pH'd water.
 

Shredder420

Member
Thanks, yes there's tons of helpful info, it's all much appreciated. Anyways, I'm going to probably get something cheap at walmart for now in the meantime- probably lemon juice or vinegar. Just because I need something now and it's all I can afford, so I might as well risk it with just a little, and soon when I can get some I'll get sulfuric/phosphoric acid or some pH down if I can get that instead. The pH is locking out the calcium so before I feed it anymore I want to get the pH down. How long will it take to recover, a week maybe?
I'd say if things are looking good pH-wise, then yeah give her a week or even less to see results. sometimes the old leaves won't show much change but the real difference should be in new growth. it really can be affordable using something like sulphuric acid or phosphoric acid.. looks like they both run around $10+ online in concentrates, and according to Father Jack here on RUI he says:

  • "I don't like to spend big bucks on ph down from the hydro companies. I use tap water...so I go through quite abit. My favorite is Sulphuric acid. I just go to the auto parts store and buy a liter of battery acid for about $5. Get a gallon of distilled water. Pour one cup of distilled water out of the jug...and pour one cup of battery acid into the jug. Carefully shake it up...and now I have a gallon of ph down for about a $1. Plants love the sulpher...as most nutes seem to omit sulpher...and plants need it"




 

SwagstaffBud

Active Member


I'd say if things are looking good pH-wise, then yeah give her a week or even less to see results. sometimes the old leaves won't show much change but the real difference should be in new growth. it really can be affordable using something like sulphuric acid or phosphoric acid.. looks like they both run around $10+ online in concentrates, and according to Father Jack here on RUI he says:

  • "I don't like to spend big bucks on ph down from the hydro companies. I use tap water...so I go through quite abit. My favorite is Sulphuric acid. I just go to the auto parts store and buy a liter of battery acid for about $5. Get a gallon of distilled water. Pour one cup of distilled water out of the jug...and pour one cup of battery acid into the jug. Carefully shake it up...and now I have a gallon of ph down for about a $1. Plants love the sulpher...as most nutes seem to omit sulpher...and plants need it"




I'll definitely get some of that stuff as soon as I can, it sounds like the best bet overall. Hopefully it helps turn this plant around, I'm so worried about the stinky little bitch!
 

Shredder420

Member
I'll definitely get some of that stuff as soon as I can, it sounds like the best bet overall. Hopefully it helps turn this plant around, I'm so worried about the stinky little bitch!
That's what I'm thinking, and I might just go get some myself if it's that cheap. I don't think one could really go wrong with it. And I hear ya dude, you have the drive to get it sorted out, so I think she'll be just fine.
 

SwagstaffBud

Active Member
update, I picked up some lemon juice and watered with pH'd water that was around 5.5 or so. The runoff was between 6-7 so around 6.5 so hopefully she get's better.
 

Alexander Supertramp

Well-Known Member
http://imgur.com/a/6Upbd I'm pretty sure I have a problem with both, the curling leaves look like phosphorus to me. And I haven't been able to figure out what the brown spots are but now I'm pretty confident they might be from calcium deficiency. I fed the plant at half strength on Tuesday though so could itt have become phosphorus deficient that quick? The plant is bagseed, in an 8 inch pot. Potting soil + perlite, has been in flowering just over 3 weeks and I have been feeding it once weekly at half strength. Under a 400w HPS, temps between 75-79. The curling of the leaves started yesterday and the temps had creeped up to 90 because one of the fans in my room turned off.
Curled leaves from heat stress. Hotter spot with fan out. Discoloration of the lower fans leaves displays as an early magnesium deficiency.
Read through some of the thread but not all of it. Bickering got too me. Lose the molasses completely. Alittle is ok when brewing a tea but not in your drench. It just builds up offering little to the plants or medium. It will just cause issues later. This is all just my opinion of course.
 

SwagstaffBud

Active Member
Curled leaves from heat stress. Hotter spot with fan out. Discoloration of the lower fans leaves displays as an early magnesium deficiency.
Read through some of the thread but not all of it. Bickering got too me. Lose the molasses completely. Alittle is ok when brewing a tea but not in your drench. It just builds up offering little to the plants or medium. It will just cause issues later. This is all just my opinion of course.
I don't think the curling was from heat, the plant in question is farthest from the light and my temps haven't been to high. It looked like a phosphorous deficiency to me because of the purpling/graying in between the veins. I could post a more recent update too, it got worse the next day as well so I definitely don't think it was heat. I fed it twice this past week though so it should be good on magnesium but thanks for the input man.
 

209 Cali closet grower

Well-Known Member
I don't think the curling was from heat, the plant in question is farthest from the light and my temps haven't been to high. It looked like a phosphorous deficiency to me because of the purpling/graying in between the veins. I could post a more recent update too, it got worse the next day as well so I definitely don't think it was heat. I fed it twice this past week though so it should be good on magnesium but thanks for the input man.
lock out will make it look like it needs nutes..The curling up, is a first sign that there get to much of something in soil(toxic level), and not of the other-what it needs.
 

SwagstaffBud

Active Member
lock out will make it look like it needs nutes..The curling up, is a first sign that there get to much of something in soil(toxic level), and not of the other-what it needs.
I don't want to completely disregard your post but the curling upwards started several days after I fed it at half strength, which I've been doing only once a week. I fed it twice because it was recommended previously in this thread because it was concluded there is a calcium deficiency. The curling up started after that. So is something getting locked out and something is getting taken up too much? Should I flush and not feed for a few days to see if thats what it is?
 
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