i have a hydroponic system im growing 9 strains to see which likes my area the most. i have two sick plants. im growing under a 1000watt hps on a light mover. im 12/12 water and light. im running fox farms nutes as per thier schedule for the final month of flower im 4 weeks into flower. im injecting co2 6 times a days for 1/2 dont know what ppm the co2 is cuz some ahole robbed my last house and took it when he stole my herb! one plant looks really limp the leaves are drooping the other looks great but the big fan leaves are turning brown around the edges. please help im worried these sysptoms will get on my other plants and ruin my grow. thx in advance for any help. rm
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