Want other opinions.

Have kc brains northern lights that where germinated Dec 26 16. 4ft t8 2900 lumens x 6 bulbs on 24hr. indoor inside tent controlled environment. Hi of 80F low of 68F RH between 55% and 38% Growth is going very nice, just noticed lower leaves yellow and brown. I've used light nutes of fox farm grow big in the first weeks and have been using only 6.5ph r.o water for about two weeks. I was getting ready to water today and noticed the deficiency. I believe it may be a magnesium deficiency, but don't want to jump to conclusions while the soil is still dry. Should I add a dose of grow big to my water ph it to 6.8? Just want to make sure. Thank you!!!! RESPECT!

im guessing you need about 10mls calmag and 1/4 tsp epsom salt added to your feed

fox farm nutes have no calcium

http://rollitup.org/t/what-is-wrong-with-my-plants.933617/page-3#post-13337033

just went thru the same thing with another

check it out

Do you add the Grow Big every time you water? I have a 3-4 week BB that seemed deeeep green(too much nitro) just from one feeding of that stuff.
A week later now looking Cal/mag or zinc def.
Using tap water btw, with a sediment filter and air stones remove chlor.
Just maybe thinking the Grow Big might be lockin out some stuff

im4satori said:

http://rollitup.org/t/what-is-wrong-with-my-plants.933617/page-3#post-13337033

just went thru the same thing with another

check it out

Click to expand...

My plants look much healthier than that thread. Seems the affected leaf is worse. OG kush loved the 1 teaspoon of grow big per gal of water. But the northern lights almost looks as if wants more water. NL is about 14" tall in a 1gal water jug. It might be time for a 5gal bucket. Oh I use happy frog soil from fox farm.

Bump

Just gonna trow it out there....root aphids

No one thinks root bound could be the problem.

When my plant was root bound you could barely stick your finger in the soil w/o tearing roots. She was 30 days from seed in a 2 liter pot.

Unless you have some serious holes in the bottom of that milk jug, I bet it doesnt drain that well.

Roots coming out those holes?

Was joking about the RA btw....Well sorta joking.

S'sloegro said:

When my plant was root bound you could barely stick your finger in the soil w/o tearing roots. She was 30 days from seed in a 2 liter pot.

Unless you have some serious holes in the bottom of that milk jug, I bet it doesnt drain that well.

Roots coming out those holes?

Click to expand...

Yeah roots are coming outta the hole. I just transplant to a 3 gallon pot. Yeah the soil in.the 1 gal jug was solid root ball. Plant was extremely elastic and droopy yesterday even tho the soil is moist

I thought your plants look great and are telling you that they need a new home. Don't add anything but, more soil and ferts keep your Ph normal for soil and there is no need for special ingredients. Like cal mag etc. There is usually enough in your soil and regular ferts. for one grow. IMO