Nute burn or n deficiency?

So I am 6 weeks into flower and my bagseed plant is yellowing a lot. I need help this is my first grow my other plant la a clone and doing fine. I'm not sure if I should flush im using ff ocean forest soil with tiger bloom 1 tsp and big bloom 2 tsp also cha ching at 1/8 tsp. I'm in a 2x4 tent with a 300 w viparspectra and 450 w vipar LED with 2 plants in the tent. Any help would be great, I don't want to ruin my yield plz help.

Here it is

Have you taken, a reading of your soil? Ph?
Looks like ph may be low.
Id be inclined, to use fresh, un ph'd, water. With a TINY, tiny bit of ebsom salts. From here on out.
Buds look pretty healthy though.
Thats about, as good, as you're ever gonna get, with a viparspectra. I used to use a 900w reflector series.
Good effort man. Solid job, with the tools at your disposal.

I haven't checked soil ph I have a cheap 3way meter but it always says its high like at 7. I have a digital ph meter but not sure how to check the soil with that? Check the ph of the runoff? Thank you man I appreciate it. I have 2 lights in that space and its at like 81, wondering if that's too hot.

It is a little hot. You should, juuust be able to get by. With good airflow.
Ph 7, is a bit high. Have you been supplementing ebsom too?? You may be overdoing the mag, if you have.
Can you tell us all, exactly what you've added to your soil, since it started?

So I just checked runoff ph it is about 5.5, I just fed with ph 6.3 tap water with 1 tsp tiger bloom 1.5 tsp big bloom and 1/8 th of a tsp cha ching, all fox farm nutes. I haven't added anything to the soil besides perlite. Also fox farm nutrients and water that's about it.

Holy f@%##k dude.
That cha ching's NPK is 9-50-10???
Tiger bloom 2-8-4?
Big bloom looks very low. Looks ok.

But add the tiger + cha ching, in a standard dose together, you get a 11-58-14.
See where im going? That is a MASSIVE amount of P.
NK, is high too. Especially the N, for flower.

IMHO
You've been over indulging them.
Id be inclined, to just use the big bloom. From here on out.
Even just water, isnt gonna hurt.

Is it an 8 week strain?

Yeah I see where your going, it does seem high.I've been following the fox farm feeding schedule at half the dose. This strain is unknown it was bagseed so I'm not sure I'm guessing it may go 9 weeks because the trichomes are still very clear but I'm not sure.

Tim1987 said:

Holy f@%##k dude.
That cha ching's NPK is 9-50-10???
Tiger bloom 2-8-4?
Big bloom looks very low. Looks ok.

But add the tiger + cha ching, in a standard dose together, you get a 11-58-14.
See where im going? That is a MASSIVE amount of P.
NK, is high too. Especially the N, for flower.

IMHO
You've been over indulging them.
Id be inclined, to just use the big bloom. From here on out.
Even just water, isnt gonna hurt.

Is it an 8 week strain?

Click to expand...

To put it into perspective. My bloom nutes are 5-3-9. This more than gets me through, with the odd bit of calmag.
Im only just reaching 4mL/litre, at 6 weeks of bloom.
According to the feed chart of my nutes. 4mL/litre in RO is 1500ppm!!!

Flush it dude.
All slow like. For the next week or two.

Phosphorus takes quite a while for plants to use.
Im in hydro too.
My medium, practically has nothing in it.
Imagine if i was doing the same, but with soil.....

Joshc92 said:

So I just checked runoff ph it is about 5.5, I just fed with ph 6.3 tap water with 1 tsp tiger bloom 1.5 tsp big bloom and 1/8 th of a tsp cha ching, all fox farm nutes. I haven't added anything to the soil besides perlite. Also fox farm nutrients and water that's about it.

Click to expand...

Runoff at 5.5? Isnt that very acidic for soil? That's good for hydro but not in soil. There's something in your soil (salt build up) that's making your runoff as low as 5.5 If I'm right then that make sense your leaves are yellowing up early because you pretty much cut off all the macro elements (NPK). Your runoff should be around the vicinity of 6.5

You might just want to flush it with water at ph 7 or higher until you get your runoff to or near 6.5

Just saying.

Xs121 said:

Runoff at 5.5? Isnt that very acidic for soil? That's good for hydro but not in soil. There's something in your soil (salt build up) that's making your runoff as low as 5.5 If I'm right then that make sense your leaves are yellowing up early because you pretty much cut off all the macro elements (NPK). Your runoff should be around the vicinity of 6.5

You might just want to flush it with water at ph 7 or higher until you get your runoff to or near 6.5

Just saying.

Click to expand...

Yeah i though the same too.
I think if the water goes in at 7. Untouched, it should be good.
Thanks @Xs121, I neglected to say
Thanks for picking that up

phosphorus poisoning. You don't need ferts for ocean forest, unless it's late in a long term grow and you're sure you need to add some.

I use ocean forest all the time in 5 gal. buckets. I add banana peels and chicken manure and worm castings in the bottom 4 inches and stir it in. at mid level I add a half cup of epsom salt stirred in again. If I don't, i start to have nute def. mid flowering. I start flowering around 2-3 weeks from germination. Of course some strains need more nutes than others but they all seem to like this technique. Also your light spectrum plays a role in how much nutes your plant will use. A high kelvin rating from a metal halide will force your plant to use more nitrogen. etc.

Thank you all for the help, I think ill flush at ph 7. Then do i add nutes after that or no? I have sledgehammer flush but don't want to hurt it even more.

Joshc92 said:

Thank you all for the help, I think ill flush at ph 7. Then do i add nutes after that or no? I have sledgehammer flush but don't want to hurt it even more.

Click to expand...

IMHO
Dont give it anything, but plain water. Until you see obvious improvement.
If it isnt getting any better, in a few days. Post back here.
Good luck
Keep us all posted.

My question is: How many weeks are the plants?

Just started the 6th week of flower, planted seed like the second week of January.

You can flush but there's no guarantee it will work. It's kind of hard to say what will happen. You'll have to wait and see, and don't over fert next time. ocean forest already has fert in it and it's too hot even for small plants. you have to use something weaker, like the light warrior soil, then switch later with a transplant into ocean forest.