Here is my 80 gallon aquarium (set up for African Cichlids) that i have spent a solid amount of time on and documented most of my steps to share with all of you other aquarium hobbyists. The guide includes directions and pictures showing how to set up an “UG filter/UG current system”—its hard to put a name on it because it essentially is not an under-gravel filter but it is under the substrate and causes a valuable current inside of the aquarium, which gives more oxygen to the fish and keeps any poop or trash off the bottom of the aquarium (keeping your sand clean). So please give my aquarium a look and let me know what you think or if you have any suggestions, THANKS AND I APPRECIATE COMMENTS link to DIY PDF file: www.scribd.com