led grow lights

So This is my First time with my new light i plan on getting P3 P3IP4400, Kill A Watt Electricity Usage Monitor to check how much watts i am pushing out cause the dimmer dial it's really hard to tell beyond 50% I recently turned the knob up a little from 50% to maybe 60% to 70% these plants are...

Sometimes i find things not on this web site or better explained (no offense I love GWE!) and i stumbled on this web page that explains LED's pretty well and also explains HID equivalency and why they say it is "equivalent to wattage" in reference to HPS or MH. Thought this would be a good place...

Hello! I’ll start off by saying I’m a newbie grower. Got interested after finding a seed in my bag and decided to grow it! I finally purchased everything i need for my grow tent and I opted for a SpiderFarmer sf 2000 light in my 2x4 grow tent. I don’t have anything to measure the photon...

I realize if I asked 100 people, I’d get 100 different answers. I’ve been doing a lot of serious research and comparison of dozens of LEDs. I think I know which one I’m getting, but just in good fun, from the 4 lights I’ve narrowed it down to, which light would you get? Optic 6 Gen 3...

These seedlings are grown in canna peofesssional plus mixed with about 30% perlite and watered with rain water that has been left out to settle for at least 24 hours i keep getting dark yellow/brown edges on the older leaves any idea why? My grows have been fine and the only things that have...