ok so first dose of nutes today..1/4th strength 1-1-1 combo

2ml per gallon of bloom,micro, grow
1 tsp per gallon of Fulvic Acid
1/2tsp per 5 gallon of Floralicious plus
1 drop per gallon super thrive

PPM-475-485

The yellow has all together stopped spreading, new growth is very green and lush..that 4th plant is still struggling but its slowly making it..im not going to kill it just yet, imma see if it pulls through and makes it