Here is my 29 gallon tank that I am going high tech with.
The light is a piece of 0.08 inch thick aluminum bent into a reflector with six 10w Chinese LEDs thermal epoxied to it. these LEDs were about $1 each on ebay from a US seller. Their color temperature is 6500K. I am currently running all the LEDs in series for a total of about 60V at 1A. I hope to build a custom boost driver for the light soon so I can run from a computer power supply.
I built a custom sheet metal brake to bend the light fixture which works well. I used a piece of wood with a radius routed on the edge to achieve the curved edges on the reflector. The open ends of the reflector are caped with wood. The paint is one coat of metal primer plus two light coats of grey textured paint.
CO2 is currently being produced by the standard yeast and sugar mix in a 2L bottle. The reactor is 10 inches long and made with clear 1.5 inch PVC pipe. The ends are 1.5 to 0.75 reducers. The fitting that connect to the flexible filter tubes are custom machined from solid PVC rod. They are a slip fit to the reduces on one end and a press fit to the flex tubing on the other end. The CO2 is injected into the reactor through another custom fitting that fits into the 0.25 inch CO2 tube and is epoxied to the reactor on the other end. The CO2 tube is standard black vinyl, none of the special CO2 rated tubing.
My drop checker has been yellowish green so my CO2 level is fairly high.
I have been fighting some Blue-Green Algae which has been somewhat killed by adding KNO3 to the tank.
Sorry for not taking pictures of building these things, I am better at making things than taking pictures it seems.
The tank was just planted today so don't mind the mess.
Aqueon 29 gallon
One 2L bottle DIY CO2
Custom LED light at 60W
Special Kitty Substrate
Rocks from backyard
Here is a link to a gallery of pictures of this http://imgbox.com/g/7gBPdLImoT