So you got 5 ounces dry weight off of just ONE plant? That's actually a fantastic yield! I don't know what your situation is, but as someone above posted you would definitely benefit from a scrog type set up. I believe a 400 watt bulb is capable of covering a 3x3 sqft area right? So unless your one plant was 3x3sqft, you could have actually yielded a lot more with your set up! And if you're yielding 5oz off one plants you're obviously doing something right already! If I may offer some advice, take a look into SOG or SCROG techniques so that you can get the absolute most out of your light. You can fill a 3x3sqft area with that bulb, perhaps next time you can take one or two plants and fill up a 3x3 screen before you flip to 12/12? If I may also suggest looking into compost teas as well? Fresnofarmer posted some wonderful recipes somewhere on this site, google fresnofarmer compost tea and you should find it. Making your own compost teas are cheaper than nutrients and is 100% organic. Nice job on the harvest by the way, you should be quite proud!
That's a good yield, no doubt.
