Living soil growing

that's some nice looking plants. I'd suggest checking your mediums PH and ensure no lockout is happening first before feeding more and more. then If the teas your providing are not enough are they supplying the correct nutrients the plant needs? Could always use a quick fix liquid nutrient. just to boost it back then go back to more dry amendments. Curious what dry amendments your using and how much per Gal or L Weekly feeding with them is anywhere from [15ml]-1tbsp-[5ml]-1tea per Gal of medium per plant. If its a bloom only nutrient the N maybe to low. also check out magnesium deficiency as some of the leaves look like it could use some of that, and that's an easy fix, bath salts :) .5-1g per gal of water or around 50ppm. Best of luck