Hi Polski. I'm using a few different brands.
I used Alaskan Fish/Kelp and a Cornucopia two part grow/bloom and Dr. Thomas' Plant Energy (carbolxylic acids), molasses, cal/mag, Super Thrive (vitamins) and Advance Nutrition's Big Bud. I'm out of Ph down and have used a little cider vinegar to lower Ph to 6.0-6.5.
Well water is hard and neutral Ph.
Soil is peat moss, vermiculite, composted cow manure, garden/kitchen compost and rich forest loam. As usual, the soil was a little hot and was rough on the seedlings but now they are getting strong as the soil inoculates are working well.