need help with my garden

SDC11102.jpgSDC11100.jpgSDC11099.jpgSDC11101.jpgSDC11104.jpgSDC11103.jpgSDC11098.jpgi am using gh nutri and bloom grow just how bottle says adding cal-mag also last crop was fine with this formula now using co2.im in week 6 of flowering and losing alot of leaf and one plant out of each tote is green but very willted and then browns and dies. about 800ppm ,6.1 ph,1500salts.i have 3 totes each with 5 plants the other two tote have lower nute levels because i was thinking overfeeding but dont think so now, maybe nute lockout of some sort, can post more pics if needed please help im so sad like my plants​
 
Top