Here’s your Google for research purposes on Hempy Buckets “all perlite hempy bucket KISS,” or “hempy bucket Lucas Formula.”
It’s really really easy to do all perlite, maxibloom, or Jack’s 3-2-1. Many people love coco, but it’s a pain to me, and perlite is easy, just watch the dust. 
Hempy is a mix between full hydro and soil, it gets the benefit of explosive growth of hydro while allowing the Gardener to hand water/feed. You can also literally customize any solid walled bucket/chamber to make into a hempy. I love to re-use gallon jugs or cat litter jugs. I have also grown for a party cup challenge on RIU a 24 gram Abusive Kush 12/12 from seed in a 16oz hempy solo cup. 
The method I learned from was Doc Bud’s 2 liter SOG from ICMAG back in the day 2010ish, single cola producing 10-14 grams placed right into flowering as soon as the cuts showed roots. It’s a hard to find thread now, he does the whole BRIX sugar testing method that he sells now, but the 2-liter SOG was super innovative.
Probably the best way except flood and drain to do a SOG from clone IMHO. I also love it to pheno hunt. Can look at lots of plants in a 2x2 with solo cups.
Anyway, I’m getting lost in the weeds 
lovely garden and I’m glad you got the issue fixed, they will recover well now! 