Christian Posted January 3, 2015 Share Posted January 3, 2015 I have a 72" 3X 250w MH lighting system, the blue pc Bulbs don't work on it anymore, so I have some LED lights that I was going to connect up to the controler that they came with but how long shound I have them run? Right now I run Blue leds from 7-9am MH 9am- 3pm White and blue leds 3pm-7pm Blue 7pm- 9pm Thoughts and ideas Quote Link to comment Share on other sites More sharing options...
Bpb Posted January 3, 2015 Share Posted January 3, 2015 I'd just observe the livestock. If there's no signs of light stress, no need to reduce it. If everything looks happy, and you're maybe wanting more growth or longer viewing, increase a little. I personally run mine like this: Blue/violet LEDs: 11% intensity 11am-3pm Blue/violet LEDs ramp to 100% 3pm-4pm 2x250 watt MH on with LEDs at 60% 4pm-10pm LEDs ramp from 100%-off 10pm-11pm Quote Link to comment Share on other sites More sharing options...
Christian Posted January 3, 2015 Author Share Posted January 3, 2015 Ok cool, yeah I try to keep it as close to sunrise and sunset as possible. Quote Link to comment Share on other sites More sharing options...
Timfish Posted January 3, 2015 Share Posted January 3, 2015 12 hours, On/Off. Quote Link to comment Share on other sites More sharing options...
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