not to sure what the prob is with pics

hi guys im not sure what this is is it nute burn or sum kind of deficiancy

im in bio bizz light mix

feeding with AN ph perfect range micro grow bloom

you are burning them, what are your ppms at?

i dnt check ppm as im in soil but im feeding them the recomended dosage of 4ml of each per litre

Wow wayyy to much first u really don't need bloom is the veg stage.. and 4 ml a L if each is way to much for that lil plant.. u need to invest in a ppm or ec metter.

what's the npk ratrio on each bottle.?

well i t says to feed all 3 at the same time from start to finish it a 3 part nutrient

the npk values are

micro 2-0-0
bloom 1-3-4
grow 1-0-4

the plants are around 31" tall they are in there 3rd week of 12/12

Ok cut the grow food that's wats probaly fucking with it your p needs to be more then k.

i alsp used bud blood for the first 10 days of 12/12 at 0.5g per litre

i thought maybe it was a mag def and maybe calmag would sort this ?

If u got cal mag use some it won't hurt but stop the grow nuts for shore and 4 ml a l seems high even with the low npk u probly hitting at less 1.5 ec try cuting the food in half so 2ml l of micro and bloom and 1 ml L of cal mag.. that might help.

shall i give them a flush and then start on 2ml again?

Again? Did u resently flush and feed them?

i gave them a flush last week but i havent seen an improvement

Magnesium (and iron) deficiency looks different. The veins stay green and the lamina between them turns yellow. You have the opposite.
I'd agree with nute burn.

Ok flush them feed it light and don't watter for 3 or 4 days after that is my best advice I can give.