Lighting just a quick one about small cfl bulbs...

[midowo]

I would suggest those 46 Watt ones as those are the most energy efficient. I compared those lumen per watt values:
13 W = 825 lumen => 63 lumen/watt
26 W = 1610 lumen => 61 lumen/watt
42 W = 2700 lumen => 64 lumen/watt
45 W = 2800 lumen => 62 lumen/watt
85 W = 4250 lumen => 50 lumen/watt
125 W = 7,000 lumen => 56 lumen/watt
200 W = 9500 lumen => 47 lumen/watt

as you can see 45 W bulb has the best performance at least in the lumen output but i guess the PAR value is also higher.
Hope this helps!

 

[steelrat]

Yes lots of smaller ones, you should have at least 150 watts IMHO

But using one big one for short plants works well because then there are no penetration isues.

My CFL was rated for 8,000 hours and lasted 8,100.

My post about the light with results here :

https://www.autoflower.org/f103/best-cfl-i-ever-used-four-ounces-dry-27319.html#post517900


steely

 

[omnious]

I don't see how I would manage [pic] with just one bulb, even bigger than 40 watt. Strain depending of course, considering the leafs. I wish all 5 were 40 watters, three are 26W and I don't see enough penetration from them. And bulb duration, more than one grow definitely.