Lets try this again... HELP!! My leaves are yellowing!

We are at day 56. They're autoflower. Humidity is between 51 and 60 light is 12 12 temp stays between 77 and 81 and the ph is at 6.8 we are getting really yellow leaves. It just seems way too early. Is this a nutrient deficiency or part of the process. This is our 1st time with autoflowers and my first time ever getting this far. Any advice is absolutely welcomed!! Please! Also I'm pretty sure I have a plant with a calcium deficiency what's the best way to raise it without messing up the PH?

Sensimilia_Sensei said:

We are at day 56. They're autoflower. Humidity is between 51 and 60 light is 12 12 temp stays between 77 and 81 and the ph is at 6.8 we are getting really yellow leaves. It just seems way too early. Is this a nutrient deficiency or part of the process. This is our 1st time with autoflowers and my first time ever getting this far. Any advice is absolutely welcomed!! Please! Also I'm pretty sure I have a plant with a calcium deficiency what's the best way to raise it without messing up the PH?

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I think they start turning yellow when they are almost finished

6.8 ? Seems a tad high. I shoot for 6.3 or 6.1

Sensimilia_Sensei said:

We are at day 56. They're autoflower. Humidity is between 51 and 60 light is 12 12 temp stays between 77 and 81 and the ph is at 6.8 we are getting really yellow leaves. It just seems way too early. Is this a nutrient deficiency or part of the process. This is our 1st time with autoflowers and my first time ever getting this far. Any advice is absolutely welcomed!! Please! Also I'm pretty sure I have a plant with a calcium deficiency what's the best way to raise it without messing up the PH?

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Why run lights on a 12/12 when they are autos? Give them at least 18 hrs of light but autos can be run with 24hrs of light. Also if you’re in soil then 6.8 is fine for a PH If you’re using tap water don’t even worry about PH in soil. Have you started feeding them anything yet? It may be your medium is running low and they need some food but for the most part they don’t look bad at all

What is your grow medium?

I would guess your nutrients are sufficient at supplying what the plants need. Adding more is probably not the solution. It is more likely something you are not doing well. Like maybe keeping things 2 wet drowning roots and a bad ph.

Do a slurry test and check your soil ec and ph

assuming you're in soil my guess is ph issues from allowing them to dry back too much/inconsistent watering habits

autos tend to be less forgiving

that said we would need to know light, distance from canopy, medium, nutrients you are feeding..

Treesomewanted77 said:

Why run lights on a 12/12 when they are autos? Give them at least 18 hrs of light but autos can be run with 24hrs of light. Also if you’re in soil then 6.8 is fine for a PH If you’re using tap water don’t even worry about PH in soil. Have you started feeding them anything yet? It may be your medium is running low and they need some food but for the most part they don’t look bad at all

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Is that true??? Using tap water, don't worry about pH in combination with soil? I'm not a pro, have a few runs under my belt. My tap pH is about 7.8 I let it sit in a bucket 24hrs to dechlorinate but then I always add just a little lemon to pH to 6.8. Not necessary?

I'd never instruct anyone to not bother with pH in soil, but I don't do it all that much anymore. Any decent quality soil should already be buffered, so unless your water is unusually acidic/alkaline, it shouldn't be an issue. My water comes out of the faucet at 8.5+. Early in veg, I may add a little lemon juice to drop pH a little since I'm not adding a very high dose of nutrients for young plants. I mainly use MegaCrop these days, so by the time I've flipped and I'm using a full dose, it drops my pH to around 6.5-7 which has seemed fine for me so far.

MichiganGrows44 said:

Is that true??? Using tap water, don't worry about pH in combination with soil? I'm not a pro, have a few runs under my belt. My tap pH is about 7.8 I let it sit in a bucket 24hrs to dechlorinate but then I always add just a little lemon to pH to 6.8. Not necessary?

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Yeah unnecessary to PH your tap water unless it’s crazy high but yours is fine. When you add nutrients it will lower the ph some normally.

MichiganGrows44 said:

Is that true??? Using tap water, don't worry about pH in combination with soil? I'm not a pro, have a few runs under my belt. My tap pH is about 7.8 I let it sit in a bucket 24hrs to dechlorinate but then I always add just a little lemon to pH to 6.8. Not necessary?

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You might want to spend some time reading articles published by horticultural sources, rather than weed boards. pH is one thing, alkalinity is another. The pH of irrigation water has little effect of the pH of the substrate, but alkalinity will drive substrate pH up over time. I encourage you to read. I've lost all interest for trying to explain this stuff to folks on weed boards. Start here...

I wouldn't recommend changing the lighting now either.

Fangthane said:

I'd never instruct anyone to not bother with pH in soil, but I don't do it all that much anymore. Any decent quality soil should already be buffered, so unless your water is unusually acidic/alkaline, it shouldn't be an issue. My water comes out of the faucet at 8.5+. Early in veg, I may add a little lemon juice to drop pH a little since I'm not adding a very high dose of nutrients for young plants. I mainly use MegaCrop these days, so by the time I've flipped and I'm using a full dose, it drops my pH to around 6.5-7 which has seemed fine for me so far.

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Very cool, I'll give it a shot on my next run on a couple of the plants
I only run autos because I'm impatient.
Super simple 1/2 HF 1/2 OF with a cup of EWC and Down to Earth Langbeniete (I like FF soil, they use good stuff in it, but hardly any potassium, the Langbeniete really helps) and some perlite.
Then Dr Earth Veg & Flower girl when the nutes run out, usually about 20-30 days in.

waktoo said:

You might want to spend some time reading articles published by horticultural sources, rather than weed boards. pH is one thing, alkalinity is another. The pH of irrigation water has little effect of the pH of the substrate, but alkalinity will drive substrate pH up over time. I encourage you to read. I've lost all interest for trying to explain this stuff to folks on weed boards. Start here...

alkalinity in irrigation water, www.ask.com

www.ask.com

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Thanks for the article link, I'll take a look. And yes, I agree..... when getting advice or tips on message boards I always do my due diligence on that first before following thru.
But without those tips n tricks there are rabbit holes I'd never have dove into in the first place. Both, are always welcomed and appreciated.
Thanks fellas .

Oh and sorry for taking over the original thread topic.....

MichiganGrows44 said:

Is that true??? Using tap water, don't worry about pH in combination with soil? I'm not a pro, have a few runs under my belt. My tap pH is about 7.8 I let it sit in a bucket 24hrs to dechlorinate but then I always add just a little lemon to pH to 6.8. Not necessary?

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We are drying our last plant and they turned out wonderfully and we never did anything to our tap water. Just straight from the tap to the plant. But we have an artesinal.spring so the water quality is phenomenal.