I don't know why my leaft keep dying off.

It's effecting one plant in my garden severely, but another has slight symptoms of it as well. I kept trying to troubleshoot on my own but they're flowering now and I felt it was time to turn for help. They are outdoor in 45 gallon Smart Pots, with a mix of 75% Ocean Forest and 25% Happy Frog. They are watered every day because of the severe heat out here, I was watering twice a week before it got too hot, and they almost died one day. Then I went to every other day and they'd still be weepeng when I went to water them, so now it's every day. I water them with water filtered through a garden filter, a little carbon filled tube. I adjust the PH to 7.5. A couple times a week I feed them with the three part liquid Blue Planet Nutrients system, and on those days the PH of the water is perfect just like that. Now that they are flowering I started adding a tablespoon of molasses for every 5 gallons worth, only on feed days. I'd say I flush it really good about once a month. I have not had any pest problems so far this year. The plant that is feeling it the worst nearly died when I under watered a couple months back, and lost a lot of leaves. It never fully bushed up again. Here's pictures of the problem plant

Here's the other plant with slight symptoms showing but not nearly as bad.

The other four plants I have seem to be happy so I don't know what I'm doing wrong

I checked the pinned thread but all the photos appear to be missing. Any help would be much appreciated, thanks!

I don't know the nutes that you mentioned, but you may want to bump up your phosphorus. Plants need more while producing buds.

I could be wrong but 7.5 sounds too high for iron to be effective in soil. Where you counting on it dropping ? Someone more experienced might chime in... Good luck .

Oh I thought 7.5 was where it should be. I just double checked, looks like 6.5 is better. That must be the problem. I'll get on that tomorrow and make sure it's right from now on and see if that improves things. I'll keep you guys updated. By the way, how do I add phosphorus?

6.5 is great for soil. Im not sure its iron because of the way new growth looks good but for sure if you stayed at 7.5 i think you would experience iron lockout... Phosphorus can be added by switching to a feed higher in P. Maybe you could try some B12 for plants it has iron and is 0-2-0 it will have iron and an extra kick with the 2 phos. Good luck and becareful B12 ph's down water very easy ... If you got a way to test your liquids ph your good.

So by adjusting the PH to 7.5 did you lower it to 7.5 or raise it? If you had to lower it then its probably a Phosphorus deficiency.

Ok.....I'll probably get shit for saying this but the entire PH thing as far a growing in soil is hogwash. Look outside.....do you think that the grass, flowers, weeds, and trees are getting "perfect" PH? When you water your flowers with a lawn hose or run your sprinkler for your grass, do either show signs that they don't like the PH? How about outdoor growers of weed......they rely on rain-water, and I can tell you since I actually tested the PH of rain water that it's no-where near "perfect".

Attempting to make the PH for your plants "perfect" is a waste of time and distracts you from actually addressing the real issues with your plants.

Your Sativa's look great, except for that little bit of yellow, they can usually handle the heat... maybe let your hose run for a few minutes before you water with it, hose water may be extra hot, and doing some/causing weird trouble...Good Luck!

Thanks for the tips, and yeah I'm lowering the PH. It's like 8.5 regularly. Today when I water I'm going to lower it to 6.5 and let the water cool first. I'm still not sure on switching up my nutrients, I'm new to that stuff. This is my third grow but they've all had their problems and I'm just starting to get it dialed in. Is there anything I can add as a supplement to the nutrients I already use?

lilroach said:

Ok.....I'll probably get shit for saying this but the entire PH thing as far a growing in soil is hogwash. Look outside.....do you think that the grass, flowers, weeds, and trees are getting "perfect" PH? When you water your flowers with a lawn hose or run your sprinkler for your grass, do either show signs that they don't like the PH? How about outdoor growers of weed......they rely on rain-water, and I can tell you since I actually tested the PH of rain water that it's no-where near "perfect".

Attempting to make the PH for your plants "perfect" is a waste of time and distracts you from actually addressing the real issues with your plants.

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lol in the ground your right but pots are diffrent.

lilroach said:

I don't know the nutes that you mentioned, but you may want to bump up your phosphorus. Plants need more while producing buds.

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yes and yes

Got the PH taken care of. It's four eye dropper squirts per five gallon bucket now instead of three. As far as adding more phosphourus, I'm using a three part nutrient system and mixing it to aggressive bloom, what more should I do? Oh yeah, I'm only feeding twice a week. Should I start feeding every day or every other day or something now?

Use Dolomite lime in your soil and never worry about PH. Im 2 weeks from harvest and never PH'ed my water even once. Its tested at ph 8 out of my tap. I also water with chlorinated tap water.....you know like people use in their gardens outside. My grow has not suffered at all and my ladies are thriving. This site is so full of hogwash about soil PH and water nonsense its ridiculous.

Darth Dank said:

lol in the ground your right but pots are diffrent.

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This begs the question: "Why are they different in regards to PH?"

Sure. You can grow in fucked ph soil and with ph water out of ideal range, and it might survive all the way through harvest and not show deficiencies. The plant is a form of life and will struggle to survive as best in can in any environment. But, it's not ideal for the plant. This is a site dedicated to doing things right. If one person grows perfectly fine outdoors with water ph-ed at 8, it's likely because the soil ph is lower and neutralizes the high ph in the water down to an acceptable level. This might not be true for someone in a region with soil that is already a high ph. There are a lot of variables and a healthy ph is the gatekeeper to all nutes. Telling people "Don't worry about ph, because I can blah, blah, blah" is the reason there are so many "Help. My plant's in trouble." posts. It's anecdotal evidence (ie "In my experience, I don't need to ph because it's all nonsense"). Yeah, maybe because your two ph variables (water and soil) work well together. That is simply not the case with most of the posts for help on this site. The sheer volume of people whose ph was killing their plants is astronomical, and it's why everyone says "What's your ph?" early on in diagnosing plant problems.

I understand your views, and in extreme cases where someone's tap-water is way out of whack, PH should be considered. I also understand PH is the gate-keeper of nutrient uptake.

Your comment about questions regarding someone's PH levels being asked early on is like someone that believes in Jesus asking if the Christians have got it right.

But all you do is to stand back and look at nature to realize that this whole PH thing is over-blown. What do outdoor growers do about PH? Do farmers stress-out about their PH when the have thousands of corn crop growing in the fields and have no control over PH? Uh....no.

I too have read many post about sick plants, and most often the problem ends up being the grower, not the water or soil. Giving too much nutrients too soon is usually the culprit. Jumping through hoops to get the PH right is like adjusting the volume on your TV when there's a bad picture.

The PH out of my tap is 8.4 and my plants are as healthy as can be.

lilroach said:

I understand your views, and in extreme cases where someone's tap-water is way out of whack, PH should be considered. I also understand PH is the gate-keeper of nutrient uptake.

Your comment about questions regarding someone's PH levels being asked early on is like someone that believes in Jesus asking if the Christians have got it right.

But all you do is to stand back and look at nature to realize that this whole PH thing is over-blown. What do outdoor growers do about PH? Do farmers stress-out about their PH when the have thousands of corn crop growing in the fields and have no control over PH? Uh....no.

I too have read many post about sick plants, and most often the problem ends up being the grower, not the water or soil. Giving too much nutrients too soon is usually the culprit. Jumping through hoops to get the PH right is like adjusting the volume on your TV when there's a bad picture.

The PH out of my tap is 8.4 and my plants are as healthy as can be.

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I couldn't agree more! Watching people chasing their tails around in circles with testing meters and such is funny.
Unless you are using Hydro based systems, I don't see the point.
I haven't tested or removed chlorine in over a year. I got caught up in the BS a couple years ago, and then after much research, realized there is NO SCIENTIFIC BASIS or evidence that anything in our municipal water supplies, threatens, harms or interferes with growing cannabis.
As you said Lilroach, I'm sure EXTREME spikes in PH can be harmful to plants, but it would be harmful to humans also.
If you can drink it, so can your plants.

And one last thought....

Professional indoor growers using soil do indeed check and adjust PH for perfect growing conditions. The difference here is the the word "perfect" and to adjust PH as a remedy to a sick plant is like (here comes another one of my bad analogies) a doctor making sure the operating room temperature is exactly 72 degrees while the patient on the table is having a heart attack hoping that the perfect temperature will heal the patient.

Okay, but adjusting the PH certainly isn't hurting my plants, right?

That's what I'd like to know, what's hurting them? The one hasn't improved and now they all have leaves turning yellow and crunching up. Someone in another thread posted a link to this
http://www.growweedeasy.com/marijuana-symptoms-pictures

I'm definitely having a deficiency, but I'm having trouble deciding if it's maganese or nitrogen. I'm getting older leaves yellowing and dying off, but they have small brown spots up the middle as they yellow. I'm currently feeding them 100ml 0-5-4 from Blue Planet Nutrients, 37.5ml 5-0-1 from Blue Planet Nutrients, 15ml molasses, and 5 gallons of water every day. Ph 6.5 on everything. I've only been feeding them every day for I'd say 4 or 5 days, but I'm seeing no improvement, and in fact things are getting worse. At this point what should I do?

I dropped the Ph down to about 6.2 and gave them clean water. Things still seem to be getting worse.