when to add fertilizer

So, I'm a noob, been throwing mg soil throughout veg. I have one WW under 250 hps...I've been using Ph water, and that is all the last two watering, I've added molasses. Also, I've recently received my FF 6 pack of nuts. My question is : when do I know she needs the fert? She is nice, lush, green, and approx 15 in high. I've LST the crap out of her, and she is on day 3 of flowering. I've noticed some of the under/inner leaves yellowing, drying, and falling off. I haven't pulled any off. Some of the new upper growth have what seems like yellow tips of the newest top growth. I'm anxious to use the FF nuts, but will hold off, if not needed...any advice is greatly AP
recited! Thanks ahead of time!

needs pics to accurately diagnose, and when you say MG soil do you mean traditional MG potting soil or MG organic or MG seedling?

MG potting soil has lots of nutes in it
MG organic has less
MG seedling has even less

joint:Its potting soil...I have a photo from two days ago...she's still in the dark for a little while...

tokenbrownguy said:

joint:Its potting soil...I have a photo from two days ago...she's still in the dark for a little while...

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My bad...wrong photos...these are from week 2... I'll post them in a few hours. And pm you when I have em up.

awesome...good amount of perlite there

Doesn't appear to be nutrient burn, can you take the PH of the water you are putting in, the PH of the soil, and the PH of the runoff at some point? You might just have wonky PH thats causing a deficiency. From the chart I have it appears to be a phosphorous deficiency which could be from a real deficiency, or lockout, best to test the PH of the water as I said before, and the PPM of it, and the PPM of the runoff to see your TDS:

View attachment 1819265

You can buy a six pack of ff nutes but not the ffof?
The 2 weekers look sick too? Can't wait to see the others~
Next time try some other grow medium anything other than Miracle Gro~

you begin adding nutrients when the seedlings loses their cotelydons. you start with very mild nutrients. 1/8 to 1/4 of recommended strength to avoid burns. always better to give them less than they can eat than too much

tokenbrownguy said:

So, I'm a noob, been throwing mg soil throughout veg. I have one WW under 250 hps...I've been using Ph water, and that is all the last two watering, I've added molasses. Also, I've recently received my FF 6 pack of nuts. My question is : when do I know she needs the fert? She is nice, lush, green, and approx 15 in high. I've LST the crap out of her, and she is on day 3 of flowering. I've noticed some of the under/inner leaves yellowing, drying, and falling off. I haven't pulled any off. Some of the new upper growth have what seems like yellow tips of the newest top growth. I'm anxious to use the FF nuts, but will hold off, if not needed...any advice is greatly AP
recited! Thanks ahead of time!

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man i am growin the widow n i just think there notorious for that shit coz wat is apnen to u happened to me on last grow and on this grow also, i got them yellow tips on new growth even before addin nutes,i am 2 weeks into flower n again im'e gettin yellowing of bottom leaves just the exact same as it hapened to me last time, they look lush n shit but av them yellow tip thing goin on n bottonm yellowing, my other 2 plant that r different speices show no adverse affects wat so ever like the widows, go to my album pics n av a look do some comparisons to ur own! plus i av bin adding nutes very little but it dont fix the problem tips, tried epsom salts that dont yet seem to look like it worked, but like urs they look fine other than this, my last grow even wiv severe yellowing goin on i got 4 ouces of dry shit hot bud off one plant so all aint lost by any means, soilder on n good look to ya man !! ps chech out my WHITE WIDOWS album. peace !

that small plant in that big pot should not need feeding for a coiple of weeks at least, i reckon its burn because the soil is too rich

tokenbrownguy said:

So, I'm a noob, been throwing mg soil throughout veg. I have one WW under 250 hps...I've been using Ph water, and that is all the last two watering, I've added molasses. Also, I've recently received my FF 6 pack of nuts. My question is : when do I know she needs the fert? She is nice, lush, green, and approx 15 in high. I've LST the crap out of her, and she is on day 3 of flowering. I've noticed some of the under/inner leaves yellowing, drying, and falling off. I haven't pulled any off. Some of the new upper growth have what seems like yellow tips of the newest top growth. I'm anxious to use the FF nuts, but will hold off, if not needed...any advice is greatly AP
recited! Thanks ahead of time!

Click to expand...

That FF 6 pack is hot hot hot, esp using in MG soil that's already jammed packed with nutrients. I would skip the cha ching, beastie bloomz, and sesame, first time growers absolutely should not use those 3 products especially if you don't have a ppm meter. Lets see a current pic of the plant, the pic provided shows a plant too small to begin nutrients, especially if you started from seed. If you're seeing yellow tips it means its already likely over fertilized. Current pic???

nog said:

that small plant in that big pot should not need feeding for a coiple of weeks at least, i reckon its burn because the soil is too rich

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I agree, once it has large enough root structure and enough water runs through that pot it'll be fine but no nutrients for a while.