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SOIL A few issues.

buds73

buds73

New member
Hi all, It's 21 days since i flipped my plants to 12/12, and i've had a problem with yellowing leaves on one Fat banana since about day 5 of flower. I originally put this down to magnesium deficiency see this post here ---> https://forum.growweedeasy.com/forum/growing-community/456677-magnesium-deficiency. I tried getting calmag locally but was unable to find it so had to resort to ordering online, unfortunately i didn't pay enough of attention when ordering and so i've had to wait for a couple of weeks for delivery. In the mean time i got some epsom salts and have so far used it twice @1 tsp per 2 litres of water. I think it has helped and at least slowed it down as i had the same issue creeping in on another plant that didn't get any worse. I had gave my plants a look over last night when i gave them a feed and removed a couple of the yellowing leaves that were dying and on the verge of dropping off. I have a critical crack og that has shown no signs of deficiency until now. When i looked over my plants today i noticed that i have some yellowing on 2-3 leaves but it looks different to magnesium deficiency as the yellowing seems to be in the veins and spreading out from them. There was no sign of any yellowing yesterday when they were watered. There is also the same yellowing on my fat bananas as well today. Since i discovered i had a deficiency a couple of weeks ago i did a little research into my soil and found that it has nutrients in it that last 6 wks which would explain why i was getting nute burn with only small doses of nutes. I've not given any nutes for the last couple of weeks after getting nute burn when using bloom nute for the first time but top leaves are still showing very slight burn at the tips. I've also discovered that my soil isn't suitable for acidic loving plants. There is no info on soil packaging stating nutrient ratios or the ph of soil. i have noticed on occasion that my soil ph creeps up to just over 7 but today when i checked soil it was up to 7.5 so i have a couple of questions.
The yellowing is happening on the lower leaves but in the case of the largest plant it is starting to work its way further up

1. What's the best way to lower my soil ph and keep it there?
2. Could the yellowing be caused by the high soil ph or just be happening as part of the natural process of flowering and the stretch?
3. Does it look like i might have a calcium issue too?

Below are some pics of my plants. If better pics of the leaves are needed i can add those tomorrow when lights are back on.
 

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Hey73, I try to grow in soil, I see the earlier damage, but to me your new growth looks fine.
Of course I can't see them as good as you can.
If they were mine I wouldn't worry about anything, less something got bad, they look fine to me.
Your doing a great job.
 
Thanks for the replies it's put my mind at ease a little. Maybe i'm just over thinking things just wasn't expecting them to start yellowing yet. In the case of the plant in the first pic i've lost around 30 leaves in the last week all from the lower part of the plant. The plant in pic 5/6 only had the yellowing appear in the last 24 hrs but that does look more like the yellowing you would get during flower.
What's the best way to lower the PH of my soil? Should i flush with water Ph at 6? I've been watering at a PH between 6.3 and 6.5
 
I've been leaving them until they pretty much drop off. My logic behind that is that they are being fully used up before going to another leaf. Sounds logical just not sure if it's reality lol.
 
Thanks for all your replies. Much appreciated had a bit of a panic on yesterday thinking i was going to end up losing the biggest plant as it had a lot of yellowing coming on. I removed some of the more yellowed leaves today leaving just the ones that have a few fingers of green on them. Despite the yellowing leaves the larger Fat banana doesn't seem to be showing signs of slowing down having gained another inch since the pics were taken yesterday with one branch that has come up from the second node and joined the main colas looking like its going to need support soon as it already has a tendency to lean off to one side. The other 2 seem to be slowing down and only gained half inch since yesterday but have gained a couple of extra yellow leaves.
 
buds73 first it's best to start with a good neutral soil.
They say you can lower ph in soil pretty quick using 50-50 old coffee grounds an water, but I ain't never tried it so I don't know, I use Recharge, it helps to keep your soil in the right zone.plus alot of other good stuff.
Flushing in soil is pretty ruff on plants compared to coco, but you can do it.
If my plants looked as nice as yours I wouldn't do nothin except to continue feeding with a lower ph like your doing.
Flowering plants need a little lower ph than vegging plants anyway.
Maybe that might help you a little.
GoodLuck
Read up on Recharge.
 
Thanks D.A.A.S.69 I rushed into things at the beginning and made many mistakes due to lack of research (lesson learned there lol) soil being one of them. Soil is one of the things I'm looking into for my next grow which will probably be in the beginning of the new year. Had a quick read on that recharge and it might be something to look into for the next one. I'm not going to flush my plants for now and just see how they go. As everyone has said they look healthy other than the yellow leaves.
 
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