please tell me this problem

[R Burns]

Mmost web sites say top leaves affected with Ca Def.but all Ive seen IME is middle leaves or older ones.Never have I seen new leaves have spots first.

You're right! Calcium def can show anywhere. Usually on middle/older leaves. Actually called semi-mobile nutrient

 

[R Burns]

Textbook P def. Make sure your ph is correct and if so, add more phosphorus.

 

[rkymtnman]

Textbook P def. Make sure your ph is correct and if so, add more phosphorus.

Koolbloom is 2-45-28. Doubt he needs more P. Too much P is the issue.

 

[R Burns]

Koolbloom is 2-45-28. Doubt he needs more P. Too much P is the issue.

The leaves he shows def are of P deficiency. Since there is plenty being added, then likely problems are either way too much calcium or ph is too low.

 

[rkymtnman]

either way too much calcium

not using cal/mg either. i've never had too much Ca when using Maxibloom

 

[larrypizzimp93]

It could also be too much phosphorous. They look very similar. With the koolbloom I don't see it being low on phosphorous. Did this start after adding the koolbloom into the mix?

It could also be too much phosphorous. They look very similar. With the koolbloom I don't see it being low on phosphorous. Did this start after adding the koolbloom into the mix?

It did start when I first added it. I add it about week 3 after the stretch. None of my other plants show any signs. iterally just the ones directly under the light. It is a 1000w hps and they kinda close. But I know that those leaves aren't light stressed. The first pic is one on the outside of the light. second is the ones directly under

 

[larrypizzimp93]

Koolbloom is 2-45-28. Doubt he needs more P. Too much P is the issue.

I'm using liquid right now. 0-10-10 at 2ml/gal. feeding chart says 2.5ml

 

[Renfro]

It did start when I first added it. I add it about week 3 after the stretch. None of my other plants show any signs. iterally just the ones directly under the light. It is a 1000w hps and they kinda close. But I know that those leaves aren't light stressed. The first pic is one on the outside of the light. second is the ones directly under

Plants that get more light generally require more feed to keep up, if something is lacking it will often show up first on a plant that gets the most light.

 

[coreywebster]

Post more pics like the ones above but from higher angle.

 

[rkymtnman]

Post more pics like the ones above but from higher angle.

pic 2: tip burn, edges curling up too.

maybe nute lockout.

he did post this:
and e.c shows 3.0 right now lol

 

[coreywebster]

pic 2: tip burn, edges curling up too.

maybe nute lockout.

he did post this:
and e.c shows 3.0 right now lol

Yeah I noted the 3.0..

 

[Renfro]

One thing about phosphorous is it has the tendency to build up in the medium.

 

[larrypizzimp93]

Post more pics like the ones above but from higher angle.

 

[larrypizzimp93]

I added calmag last night at 4ml/gal and ppm were 1500 and went to 1430. and ph stayed at 5.7

 

[rkymtnman]

what is your EC doing?

 

[rkymtnman]

I added calmag last night at 4ml/gal and ppm were 1500 and went to 1430. and ph stayed at 5.7

i can't believe they need that high a ppm at this phase. that's like 2.8EC which is crazy high in my opinion.

 

[larrypizzimp93]

what is your EC doing?

EC showing 3.2 lol idk if my meters messed up

 

[rkymtnman]

EC showing 3.2 lol idk if my meters messed up

my plants would be melting into a pile of goo at that EC. something is amiss.

 

[larrypizzimp93]

my plants would be melting into a pile of goo at that EC. something is amiss.

They drank a lot from last night. water went down significantly

 

[rkymtnman]

They drank a lot from last night. water went down significantly

that's a great sign. your meter is off i think.

here's what i would do (as a Maxibloom user). flush them for 24 hrs with plain water. start back on maybe 2 to 3 grams per gal of Maxibloom. that's it. no bloom booster needed.