Autowreck with deficiencies losing leaves

[McDee]

Problem:
I'm not sure if it 1 or multiple deficiencies I'm sure it's multiple at this point. I'm using Mega Crop 2part for 1st time. I was using 1/2 of the recommended dosage on bag and things were good for 1st 3 weeks. Then I noticed what looked like nitrogen toxicity. Solid to dark green with leaf tip clawing down. I flush 2 gallon of RO water twice a few days apart. Then started to look a little pale so I started back with MC. I had a brain cramp and gave 1 feeding at 100% recommended dose. I then got a better scale so I could weight out correctly. 0.00g's only could do 0.0 before. Around week 5 I found MOG's 2part MC feeding schedule. I am making 1 gallon at a time, so dividing by 12. I'm on week 8 of it now, she is at day 61 today. At 1st she looked better, but now doing worse.

Medium/grow method:
5 gallon Rain Science bag with Promix

Feed: and supplements used:
Started with just MC 2part, added epsom salts, rhino skin, bud candy, Geenleaf's Bud Explosion

water source:
RO water last measured at 6ppm

Strain/age:
Twenty20 Mendocino Autowreck
61 days today
light used:
Mars Hydro SP 3000

Climate:
RH low 37 high 52 current 42
Temp low 68°f high 79°f current 79°f
Ranges are over 48hr span

Additional info:
This is the feeding schedule I'm using now. Started in week 5.

Also ph is 5.8-5.9

 

[Marshydro]

It looks like a calcium deficiency. And you'd better check the state of the plant's roots. What is the height of the light?

 

[McDee]

It looks like a calcium deficiency. And you'd better check the state of the plant's roots. What is the height of the light?

SP 3000 is 20" from her, roots are hard to see can't really move her. I was thinking nitrogen deficiency, because I flushed then it was flower and schedule drops off with nitrogen. I am horrible at see deficiencies correctly tho. I am about to feed her, you think I should give her some cal mag?

 

[Marshydro]

https://groadvisorworldwide.com/cannabis-nutrient-deficiencies/#:~:text=Calcium%20%E2%80%93%20Calcium%20deficiencies%20can%20be,green%20around%20the%20affected%20spots

.

🥇 ▷ Lack or excess of calcium in your marijuana plant

Get the right level of calcium for your cannabis plants ⭐ Avoid excess or deficiency in your marijuana crop ⭐ Everything you need to know!

pevgrow.com

Both articles are about calcium deficiency and the symptoms of too much calcium. The leaves of your plant look more like too much calcium.

 

[McDee]

https://groadvisorworldwide.com/cannabis-nutrient-deficiencies/#:~:text=Calcium%20%E2%80%93%20Calcium%20deficiencies%20can%20be,green%20around%20the%20affected%20spots

.

🥇 ▷ Lack or excess of calcium in your marijuana plant

Get the right level of calcium for your cannabis plants ⭐ Avoid excess or deficiency in your marijuana crop ⭐ Everything you need to know!

pevgrow.com

Both articles are about calcium deficiency and the symptoms of too much calcium. The leaves of your plant look more like too much calcium.

Thanks bud will definitely check these out!

 

[Marshydro]

Or post your question in this thread. This way more people will see it and help you.

New Growers Forum (Q&A)

Ask all your new grower questions here! Newbie friendly!

www.autoflower.org

 

[chuckeye]

Have you been checking your ppm's ?

Bud Explosion is recommended to start feeding After the first week of flowering.

And it is additive, you are meant to reduce the amount of MC by the amount of BE you add.

You don't need all those other additives and if you wish to continue using them you should be adding them one by one to see what effect they are having.

Seems you are loving her to death !

If you are using their web site calculator, you can enter the amount of water and it will give you the amount of MC.

No calculations necessary !

Mega Crop 2-Part Single Tank Use Calculator

Visit the post for more.

greenleafnutrients.com

Cheers

 

[Tom Bombadil]

@Mañ'O'Green is your best shot for bottles and soilless mixes..
If I had to take a wild guess Ide say it looks deficient and hungry so its locking out your food due to ph issue or its just not getting what it needs.. Easy enough to check runoff ppm and ph that should tell you something. I think you may need to mix your nutes in the proper order sometimes too but I cant for the life of me remember when that is relevant. GL!

 

[Mañ'O'Green]

@McDee flushing is where this went south. You are out of balance with too much P-K and it is locking out Ca, Mg and maybe others as well.

Mixing only 1 gallon is difficult to get your nutrients in balance with that small amount so precision in measurements is important.

Get some soluble gypsum.

Mix 2g Part A,
1g Epsom Salt mix well
then add a tiny amount of kelp, Humic Acid, mix well
then 1g gypsum. Nothing else! for next two weeks.

The Autowrecks I grew were especially sensitive to nutrient balance.

 

[McDee]

Have you been checking your ppm's ?

Bud Explosion is recommended to start feeding After the first week of flowering.

And it is additive, you are meant to reduce the amount of MC by the amount of BE you add.

You don't need all those other additives and if you wish to continue using them you should be adding them one by one to see what effect they are having.

Seems you are loving her to death !

If you are using their web site calculator, you can enter the amount of water and it will give you the amount of MC.

No calculations necessary !

Mega Crop 2-Part Single Tank Use Calculator

Visit the post for more.

greenleafnutrients.com

View attachment 1451062

Cheers

Yes, l been checking ppm its been about 500 last few weeks. I didn't start BE until she was in flower, and only gave her .25g's to start up to .38g's.