Keeping an exact constant temp of around 78 is almost impossible with temps dropping at night i have been trying to acheive this with inlet and exaust fans for years nearest i have got is 78 lights on 72 lights of but was having a chat with tom the hippie the other day and he recomended a site for lights and i came across this at a good price so ive ordered it so when its fitted i will post a report on it afficiency.be safe the postman.Hydroponics grow room control|Grow room heaters an

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