I just tried this about 3 weeks ago in my coco/perlite clones. I think not enough runoff in new coco was causing bad root health. I had super purple stems and yellow growth. I mixed up almost the same things as @DrMcSkunkins, a cup of ewc, 1 tsp un sulfured molasses, 1/2 tsp hydroguard, and 1 tsp Zeus juice (humic acids/kelp extract) in 4 gal water and bubbled for 24h. It came out to like 220 ppm so I added a light base nutrient to the mix and fed. They seemed to respond right away. I've improved my watering since then and they are all way healthier. I really think it was the catalyst to them improving. I'm thinking of brewing one up in the next day or so for both my coco and soil girls.
Oh yea, i put some mykos in there too.