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i believe there is other life ............ but if there anything like us then they could have already wiped themselfs out :(

hi ........eh no i would recommend to change the bulb after every 2 grows so dats after 6-7 months of contiune use ........ some will say less or longer ....... now you dont have to replace the ballast ... just da bulb and der only like 25 usd for a 400w any way so dont be leaving it for 2 years...