1. My fixtures are not hung, they are attached to the bottom of each shelf
using a 1 X 2 spacer board and screws. The spacer is to let air flow get
rid of the heat produced by the lamps.

2. The lights are plugged into a TORK timer model 7100 (usually found on
Ebay for under $25.) Also make sure when buying one that it is 115/120
volts as they make them for many voltages. The important thing here is to
make sure everything is fed off a GFI.

3. My shelving unit is cheap and dirty using 8 Simpson Strong-Tie brackets
RTC-24 and 2 X 4 for the basic unit. RTC-24 is available at both Lowes and
Home Depot for around $3 each.

4. I originally made mine to fit trays that a local retailer had but it
went out of business without my knowledge. That was a surprise when got
around to buying the trays. Anyway my shelves are 24 x 54 but with the
strong tie system you can make them any size you want. with in reason that
is.

you can get the basic idea here;
http://www.strongtie.com/ftp/fliers/DIY-PROJECT05.pdf

They also have in store project fliers.

5. I made my shelves removable so I could take them out incase I had a
fixture failure but in 6 years that hasn't happened.

6. I'll post an old picture on abpo under the heading shelf picture for
Chris. it only shows 2 shelves but you can get the idea that it ain't
pretty. As for watering I take them off the shelf and water them one at a
time.

I would post a picture of the inside of my greenhouse but I get too many
questions about how do you get in there.

Grow well and bloom magnificently
dusty