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yah i know they change colour as they warm up to get to thir normal operating tone but, it fluctuates as its on. that was my concern. debating about taking it back for an exchange just living with it. what do you think

i just bought this bulb like a week and a half ago. its an eye hortilux 400 watt hps.

Due to a recent heat wave my apartment is a bit hot and i do not have ac. i have 2 fans in my room. the temperature is 82 degrees. i have a constant air flow on my plants that are in their second week into flowering. will this heat cause any problems or is this going to possibly be good or okay...

I was sitting in my room the other day when i noticed my hps bulb started turning a whiter orange to a almost mh white instead of that deep orange. this started happening long after i turned on my light fixture. im just wondering do i have a bad bulb or this is completely normal. any...