DIY (Do It Yourself)

CC Skimmer's by Jon Garner
Skimmer design 101 by Shane Graber (aka "liquid")
Calcium Reactor by Jon Garner
Waste Collector by Jon Garner
Air Lift by Jon Garner
Airstone Manifold by Jon Garner
Pump Manifold by Jon Garner
Float Switch by Jon Garner
Secondary Calcium Chamber by Jon Garner
Sprinkler Circulation Device by Jon Garner
2 Gallon Silent Surge Plans by Jon Garner

 

Modified Acrylic Drill Bit by Bob (oohnoo)
KW's Nilsen Reactor info by KW
KW's awesome DIY air diffuser by KW