"No food just the nutes in the soil..."

Had to read this twice, your giving your plant no food/nutes except what's in the FF soil...?

If that's the case your plant is saying FEED ME...!

I might suggest Botanicare Pure Blend Pro Grow & Pro Bloom, it's an organic stand alone nute and all you need IMHO...

Start off slow so you do not shock your plants more then they already are...

Like 5ml Grow and 5ml Bloom per Gallon every time you water for the first two weeks in bloom, them 10ml Bloom per Gallon every time you water for the rest of the Bloom period. Flush with just PH'ed water for the last two weeks and you should be Gold...

The Burn and Distorted Growth is probably because your plant is weak, keep an eye on it and it should clear up with time and food..."-)