exhaust heat,and or need extra flood cycles,fresh air
add an extra flood cycle or two while the lights are on,try to keep replemishing the air,Aim a fan between the underside of the lamp and the top of the plants,try to keep reservoir temps around 68-70fh,and ph 5.5-5.8.....bonbon
added extra floods and another fan
i added an extra flood cycle and changed the nut mix too.. i think i made the mix too weak with a water/nut ratio that was a little bit high. the plants really arent doing good at all today. One of them has actually flopped over completely just bending the stem.. should I put them closer to the light? what else could be causing the all of a sudden sickness?