Help with seedling

[tripaholic88]

i currently have a grow going on and 2 of my 4 plants are affected by some sort of deficiency or burn. the affected plants are a FastBuds west coast OG and a feminized seeds Blue Treacle. i am currently feeding 2ml/l of: Piranha,Tarantula,carboload and voodoo juice and friday i fed them their first dose of 1ml/l of sensi grow A&B along with the root expander and checked them sunday.
my soil is 50%OF, 30% jiffy seed starter mix and 20% perlite and i also took extra precaution against burn from the OF by creating a solid seed starter core in the middle of my 3 gal smartpots
I started feeding on day 7 since i have the inner seedling mix core. I believe this to be a potassium def. after looking at a deficiency chart and reading a little more about it BUT i dont see the yellowing that is supposed to come along with potassium def. ANY HELP IS APPRECIATED

 

[Ripper]

Was that leaf ever laying on wet soil?

 

[DarkGreen]

Too much food too early?

 

[stepside]

What's in the starter core? Seedling mix and ffof have nutes they probably don't need to be fed at all for a couple weeks. That's purely speculation

 

[tripaholic88]

Was that leaf ever laying on wet soil?

Negative

Too much food too early?

im not sure...

What's in the starter core? Seedling mix and ffof have nutes they probably don't need to be fed at all for a couple weeks. That's purely speculation

it contains 50-60% sphagnum peat moss, vermiculite, coir and lime

 

[Bailey]

Doesn't look like nute burn though looks like the start of zinc Def to me but I'm no expert

 

[AWhitnam]

Post some info on soil ph ...

 

[tripaholic88]

They were fed 200-250ml yesterday
PH of INNER 100% seedling core: 6.8

SOIL MOISTURE of INNER core: 3.5

OUTTER CORE 50%OF 30% Seedling starter Mix 20% Perlite PH: 6.3 but this was low (5.4) a cpl days ago but after watering i believe the dolomite lime i added is starting to work moisture level is 6.5

i wasnt PH ing the water for the first days before feeding and i forgot to check the ph of the feed water when i added sensi grow A&B because i was using the PH perfect so that might be the problem. the PH of my oxygenated water is high at 8.1 in my 5 gal bubble bucket if that helps

 

[tripaholic88]

any ideas @namvet25 ? or did i already answer my own question? im still leaning toward a potassium deficiency... I started playing them some classical music to help them through it, im hoping anyway....

 

[namvet25]

It's way to early for any defiecency to show up so rule that out.You should have enough nutrients in the soil for at least 3 to four weeks so over feeding might have that effect.It;s not bad enough to worry about so just give it plain ph'd water for awhile and see if the new growth is still effected.