First Grow Suggestions?

I have:
1) 4x2 grow closet
2) 600watt hps bulb
3) foxfarm farm trio
4) sunshine mix soil
5) epson salt supplement
6) 4 GDP's growing in the closet for 5 weeks from clones
7) 3 gallon buckets

I water every other day alternating between water and fert. I water until it comes out the bottom. I'm using 18/6 veg cycle. I'm going to switch to 12/12 flowering tomorrow. I'm ph balancing the water to 7.0. I keep them at a steady 78 degrees. I have a bit of yeast cultures going now (4 champagne bottles and a lil' bucket). As of yesterday, I'm running the exhaust only when the light is on, so the plants can get the co2 from the yeast..

I still have a bit of yellow. I'm not sure what's wrong with it exactly. Judging from the pictures they didn't have enough mg, so that's why I'm supplementing them. They're pretty short for 5 weeks (two are at 13 inches and the others at 10 inches), and they're insanely bushy. What am I doing wrong?

Looks very Dense bushy.. wow. i love it!! cant wait for that bud i bet eh... Keep Growing!

looks like a nitrogen def.
dont overdo the epson salt or it will lock out other nutes.

this is from the growfaqs about the ph.
What pH level or range should I aim for?
What pH level or range should I aim for?
Marijuana thrives in neutral to slightly acidic mediums. Soil and soilless mixes should aim for pH of 6. Hydro growers should go slightly lower which helps prevent pythium and other root rots-- 5.5 to 5.7 is ideal
https://www.rollitup.org/view.php?pg=faq&cmd=category&id=51

your plants look pretty good. i like bushier plants. id reccomend dropping your ph, 7 is a little high. for soil you wanna hit about 5.9-6.5, your not too far from that, but still a little lower would be optimal. rather than magnesium it looks like your short nitrogen to me. get some nitrogen up in there. the epsom salt may no be needed.

plants look very bushy.Besides the yellowing of leaves they look great.

What's a good n supp?

clarity said:

What's a good n supp?

Click to expand...

the grow big fox farm organics should do. how much do you use of the grow big per gallon?
maybe you didnt have an MG def. and the epson salts locked out the nutes even more.
you may need to do a good flush with ph'd water at 6.0-6.5 then feed them with some grow big.

I'm trying to follow http://www.foxfarmfertilizer.com/soilfeed.pdf as well as I can.. The first week I didn't use any nutes. Then I quartered it for a week, half it for another, and went on full 2 weeks ago.

They were yellow and holey before I added the epsom. I just added that a to the liquid yesterday, and I sprayed it with it for a few days. They're doing better with more mg. They're still a bit yellow, but the epsom seemed to make the fucked up leaves look better.

i just got my foxfarms trio 2 days ago. and i germed on the 5th. i am using sunshine mix and just watered with 1 tablespoon of big bloom/gallon of water. ill start the grow big next week and was going to do 1/2 strength from the chart not the bottle. and feed every other watering.

smoke and coke said:

i just got my foxfarms trio 2 days ago. and i germed on the 5th. i am using sunshine mix and just watered with 1 tablespoon of big bloom/gallon of water. ill start the grow big next week and was going to do 1/2 strength from the chart not the bottle. and feed every other watering.

Click to expand...

you use bloom during veg? or..?

Dr High said:

you use bloom during veg? or..?

Click to expand...

i just started with the fox farms trio. and it shows on the chart to use big bloom except for the week before turning to 12/12.

just thought i would add my bit : bushy is nice, have you thought about 'topping' them?

AfghanBoy said:

just thought i would add my bit : bushy is nice, have you thought about 'topping' them?

Click to expand...

i wouldnt top them if your going to go to 12/12 today. if you top them at least wait a week or a little more before switching to 12/12

you can top them in 12/12 whenever you want to.Most people top them 2-3 weeks in flower so when the buds start packing on you get 2 big colas or if u fimm you get more.

wyteberrywidow said:

you can top them in 12/12 whenever you want to.Most people top them 2-3 weeks in flower so when the buds start packing on you get 2 big colas or if u fimm you get more.

Click to expand...

Note that if you top your plants in flower... it will have concequences... i wouldnt top during flower.. a week or two before flower.. maybe; other thasn that itll get stressed

Dr High said:

Note that if you top your plants in flower... it will have concequences... i wouldnt top during flower.. a week or two before flower.. maybe; other thasn that itll get stressed

Click to expand...

do u know how many vids on youtube about topping in flowering.look it up b4 u say anything about consequences.I top into flowering all the time and i havent seen a problem yet.Go look at mr.greens video .

i had some plants that i topped 1 week before 12/12. the rest i topped 1 week after going to 12/12. the ones i topped during veg. had colas twice the size of the ones i topped during flower. just going by my experience.

Welp, I added some blood meal... I used about a 4th of what the box suggested, and they grew about an inch over night. They're greener now and much healthier looking. I'm going to prune off the yellow at the end of the week and see how that goes. Thanks for the help!