Burnt leaves,curling,discoloration

Hey everybody.wondering if anyone has tried cil vegetable soil.was all I had at the time but I think it's hurting my plants.have three strains going (ak47,Rosetta stone,summertime buddha).they are all almost 4weeks feminized from seed.all have light coloured leaf tips but ak47 burnt tips only on lower leaves.the Rosetta stone has curling down leaves,new side shoot tips yellow but not top of plant and leaf discoloration.summertime Buddha has lower burnt leaves,leaf tips curling down,top leaf sides curling in and discoloration. I have used no nutrients so far.could it be there is too many nutrients in the soil to begin with? And if so will I have to transplant them or will the nutrients in the soil wear off quick enough?any advice is appreciated

If you could post a photo of the issues, we might be better equipped to give you an answer... But by the sounds of it, you have a major nutrient deficiency. What size container have they been in for 4 weeks?

They started in 2 inch planters moved to 4.5 inch a couple weeks ago.e