I've been using kind for over a year. I switched from fox farm b/c I kept burning plants. I like kind except for how nasty and salty it makes my Rez. I wasbtrying to run the full line and it got a little out of hand so now it's just the middle group for me.
Good to hear, yeah I used foxfarm for a brief time just starting soil, then did nothing but ewc tea for soil outdoor and indoor 12/12 from seed or clone, put all that stuff up when switching to the stink us systems but reading on and experiencing a Lille root rot early on has me wondering if I should bust it back out.
For now I'm adding hydrogaurd along side of pondzyme every two days.
Originally was going to run pure blend pro lineup but installed a RO system and a 55 gallon storage drum so decided on kind with the added ca in the base.
The next lineup I have on my shelf that I'm waiting to try out is cyco, friend of mine has had great success in his flood and drain tables and swears by it, also you mentioned the salt buildup from kind I believe cyco uses amino acids so apparently little to no salt buildup.