SOS yellowing leaves as seedling

blimey

blimey

Active Member
Hey, please help, I need it a lot. So here's my setup.
400w hps ~16" above the tops of the plants
FFOF
ph of my water is 6.4
temps are usually just below 80 but sometimes get up to 84.
They are 2 weeks old from sprouting.
No nutes.
There are some yellow spots on two leaves and I want to try to stop it before it gets bad.
I've attached pictures of the affected leaves with the bad areas circled in red and whole plant pics of the affected plants.IMG_0520.jpgIMG_0521.jpg1_14days.jpg3_14days.jpg
 
max316420

max316420

Well-Known Member
You need to start feeding it, it is starting to feed on itself... BTW looks very good for 2 weeks, looks like a nice and hardy plant. Once you start feeding her I bet she will explode with growth
 
blimey

blimey

Active Member
Thanks, I'm planning on feeding tonight with 1/3 strength nutes when the light comes on.
 
max316420

max316420

Well-Known Member
bb is just a catalyst, if your gonna use FF then you might wanna think about tiger bloom also. You'll run into all sorts of defs if you use just BB, especially if you go lite on it because its REALLY weak anyways. I would also recommend getting some calmag for flowing too. I have used FF for years and their very good nutrients ONLY if you use the right ratio's
 
max316420

max316420

Well-Known Member
OOOO wait your in veg, you need their GROW BIG, 1 ts per gallon and she'll love ya for it. You will def run into problems trying to use BIG BLOOM in veg, works great as an additive but you need a stronger base nutrient
 
blimey

blimey

Active Member
Oh I have Tiger Bloom as well, but I'm not going to start using it until week 3 or 4 when it starts flowering. I'm going to get dolomite lime tomorrow, doesn't that help with cal/mag as well as ph?
 
blimey

blimey

Active Member
Oh sorry I forgot to mention, they are autoflowering so they only have about a week until they start flowering. Do you still recommend Grow Big?
 
max316420

max316420

Well-Known Member
Dolomite lime works great at keeping your ph at a good level so I would def use it, but if your lady is a magnesium hog like one of my strains and many many other peoples then in my opinion I don't think lime has enough to satisfy all the needs of the plant. If you look on here the most common title of threads you see is... " yellowing leaves at 3-4 weeks into flowering" and that's due to the fact that the plant eats a shit ton of magnesium during the first few weeks of flowering. But for vegging I would def get some grow big and feed her that also
 
blimey

blimey

Active Member
Thanks for the advice. I'm going to pick up some dolomite and Grow Big today and cal/mag in a couple weeks.
 
max316420

max316420

Well-Known Member
Sweet... Here is the ratio's Grow Big 6-4-4, Big Bloom .01-.3-.7... So if those ratio's tell you anything, it tells you that you can't use BB by itself lol Good luck bro and happy growing
 
skinitti666

skinitti666

Well-Known Member
id take the ph level down just a lil notch also bro yea youre looking good for 2 weeks thats how it should be
 
max316420

max316420

Well-Known Member
Depends on how often they need watering. I feed with every watering but I like to push my ladies to see how much they can take. I would start out every other watering and see how it goes from there. I'm that crazy fucker that feeds at a rate of 2500 ppm but by NO means try feeding that strong yet.
 
max316420

max316420

Well-Known Member
My BB is a hungry bitch lol I have also found that ALOT of BB strains are magnesium hogs so just keep an eye out in flowering for magnesium def's..
 
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