can somone give my some help before this get out of control

this is what it looks like it seems to only by happing to the top of the plants. I'm feeding AN sensi ab and big bud, sensizym budcandy rhinoskin bud ignigtor and sensi calmag. the total ppm is around 1600 with ph of 5.7 plants are in there second week of flower planted in beds of sunshine #4. there in a closed room with temps at 83* and humidity at 40% with co2 running at a steady 1500. please help me out i need to get this fixed and cant seem to find out what the problem is, I need to water/feed tomorrow so hope i can get some help before so i can make whatever changes i need to.

If you are growing in soil, the pH should be around 6.5. Those look pretty P and K deficient even though you are feeding them a lot of it. My guess is the pH is too low therefore locking out the P and K nutrients.

Sunshine mix is a soiless medium so I figure the ph should be 5.5 to 6.1 or so

is it pro mix

Ahh I think so sunshine mix #4

Either way the pH seems to be the factor that is locking out, so whether in theory 5.8 is correct or not, its best to try and raise the pH to allow more of the potassium and phosphorous in. Sometimes as well, with some so called soiless mixes, there are so many other moisture buffering additives in them that they begin to more closely match soil in terms of their pH needs. I have seen some coco mixes like that, loaded with worm castings, vermiculite, perlite etc. You have to trust your eye more than the theory in the end.

i'll try raising the ph to 6.5 for a feeding or two and see if it helps. thanks for the input plus to you

"AN sensi ab and big bud, sensizym budcandy rhinoskin bud ignigtor and sensi calmag."

I dunno what all that does however it sounds like overkill.
You seem to know a lot more then I do but I would flush and get something like Jacks Classic 20-20-20.
Jacks may not be "better" then the stuff you have but sometimes keeping it simple can be best

Nute burn, flush and bring down ppm to 1300 till harvest.Wait a week and they should be fine.

boneheadbob said:

"AN sensi ab and big bud, sensizym budcandy rhinoskin bud ignigtor and sensi calmag."

I dunno what all that does however it sounds like overkill.
You seem to know a lot more then I do but I would flush and get something like Jacks Classic 20-20-20.
Jacks may not be "better" then the stuff you have but sometimes keeping it simple can be best

Click to expand...

20 20 20 is basically miracle gro

he is using an a and b base nutes
a bud builder... pk stack
bud candy... is carbs(sugars)
ignitor is a starter like open seseme by ff
rhino skin... is a silicate makes the plant sturdier
calmag is calcium and magnizium because of using r o water( fitlers taking almost everything out

thats exactly it. I'll feed to night at a lower level and pump the ph up to 6.5 ish. while looking around the web i;ve found many people use closer to a soil feeding recipe and have great results so i'ma give it a try

anyone else have suggestions???? i dont think it is nute burn as its only some of the leafs though its more every time i check. i did raise the ph to 6.4 for tonights feeding and keeped the ppm at 1600. this looks to be a good crop and dont want to have some little problem turn into a big one and mess it up

dude said nut burn, ive seen tons of nute burn the way i grow and it dont look like that

its the ph lockout... i use the same suneshine #4 and i ph at 6.2-6.4 ...

try it ...

what water u use ?

mrduke said:

thats exactly it. I'll feed to night at a lower level and pump the ph up to 6.5 ish. while looking around the web i;ve found many people use closer to a soil feeding recipe and have great results so i'ma give it a try

Click to expand...

Another thing to consider is that with the higher pH you might want to drop the EC down as well. The closer to soil that mix is the less you want to crank it like its hydro. Also considering that the plants are under stress from nutrient lockout, they need a bit of a break and time for the roots to recover. The leaves are a visual indicator of what is happening beneath the soil.

thanks guys like i said i feed at 6.4 last night so hope fully it'll help me out and i'll keep ph around there from here out next time i'll drop the ppm down to 12-1300 thanks again

Thats why I admitted that i dont know much about that stuff. I am curious as to why you say its MG. A lot of people swear by Jacks.

doobered said:

20 20 20 is basically miracle gro

he is using an a and b base nutes
a bud builder... pk stack
bud candy... is carbs(sugars)
ignitor is a starter like open seseme by ff
rhino skin... is a silicate makes the plant sturdier
calmag is calcium and magnizium because of using r o water( fitlers taking almost everything out

Click to expand...

idk maybe just the ratio's ???

nickman said:

its the ph lockout... i use the same suneshine #4 and i ph at 6.2-6.4 ...

try it ...

Click to expand...

yep thats what i do. sunshine #4 and perlite baby!!