So ive been managing my brothers autoflower grow since its his first time we havent had many issues at all till now, i did a 18 ounces water with ppm at 550, using grow big to get to the ppm goal, hes in preflower rn. And as soon as i did the 18 ounces of 550 ppm through 18 ounces solo cup soil its showing worse calcium and magnesium signs. One or the other at least. Do i need foxfarm cal mag? Or am i using the wrong nutrient? Is there not enough magnesium in grow big? The ppm out was 225 still even with a 1:1 water soil ratio. Really stuck here.
5 Likes
What medium and the PH going in? This plant is well past the transplant stage and suffering root binding in that solo cup Growmie 
9 Likes
I dont think its root binding im also suffering from this with my other plants as well, ill check the cup to see the roots and how tight they are, if they are really tight then i may transplant em. The ph is 6.5 going in. My other plant in a 2 gallon fabric pot also exibits signs kf cal amd mag deficiency and has a way lower ppm out than in. Ppm in is around 450 out is 250 on that one and its 20 inches tall
4 Likes
At 20” tall it’s been in the solo cup too long. Auto flowers should be transplanted after the seedling period 14-20 days. Reason being is the quick on set of flowering which typically occurs around 35-42 days above ground and any shock experienced during the flowering onset can affect the transition and early flowering stage. This plant should be fed around 600-800 PPMs of all the macro/micro and secondary nutrients, if you’re using the FF trio you should be feeding all 3 and calcium and magnesium
7 Likes
I apprexiate the advice and i wanna clear the musunderstanding lol. My other plant not this one is 20 inches tall. The one in the pictures is around 10 inches tall. Everytime i see a feeding chart i never see toger bloom used before flower. Its usually big bloom and grow big. Do you have any idea what fould be causing the unstable ppm levels?
4 Likes
Lower PPMs coming out than going in is showing the plant roots are consuming the nutrients from the previous feedings. If the run off is considerably higher I would be concerned. That auto still needs to be transplanted Growmie, I’m trying to offer you some advice with having a good amount of experience growing autos
6 Likes
Oh yeah this isnt the first time for me either, but i still have so much more to learn and im still working on not trying to beat myself up over mistakes. Being oatient is the most important in my opinion in this feild. As for the calcium and magneisum drficiency, why do you think its worse after the feeding? Do you think its cause im not givong enough of them so when everything gets better any calcium and magnesium in the soil is washed out and not replaced? Thank you so much
2 Likes
I’ll just feed her regular water for a week it happened to mine and she woke right up
1 Like
I need some better pics of the affected leaves Growmie, I’m not seeing a ca/mg deficiency from these pics
3 Likes
Looks like a phosphorus deficiency and commonly accompanied with a calcium deficiency Grow Bro. I would start feeding the FF trio to get the PK and micronutrients needed
4 Likes
Alright, ill start giving the big bloom then, thanks grow bro
1 Like
Ill keep that in mind. Thanks bro