Sorry no I don't have a youtube, he really is the expert, I just retrofitted his principles to fit in a small tank. Anyways, I just used a corner filter:
Amazon.com : Aquapapa Corner Filter Up to 40 Gal. Air Driven Bio Sponge Ceramic for Fry Shrimp Fish Tank Aquarium (1-Pack) : Pet Supplies
www.amazon.com
or stacked two of them on top of each other (the taller the filter chamber the better)
I first removed all the media and sponges in the filter, except for one sponge on the bottom of the filter (serves as a prefilter). I then dremeled out the plastic shelf in the middle of the filter so i could fit a small size media bag to run along the entire height of the filter chamber. To the media bag i added special kitty, natural kitty litter:
In the center of the kitty litter I added a core of Fluval Flourite. The flourite should run almost the entire length of the media bag. You want a ratio of 4:1 kitty litter to flourite
It is key to not overfill the media bag or allow the media to fill the entire filter chamber. You want space for water to flow around the media when it enters the filter chamber. I achieved this by leaving some of the plastic shelf (that i previously dremeled) in place to allow the extra plastic to push the media into the center of the filter housing. This allowed the water to enter from the bottom of the filter and flow around the media in the filter chamber. Proper execution will produce the low flow conditions in the center of the media that is needed for bacteria growth. This along with the prefilter sponge on the bottom of the filter chamber will help to avoid the media from becoming a detritus trap as well.
Finally, I hooked up an air pump to the filter and adjusted the flow to about one bubble per second (again to allow really slow flow). After about 2 months break in, my nitrates stay between 0 and 20 for the most part and phosphate stays low too in a well fed tank. I went from weekly water changes to changes about once a month and will probably go longer in the future. It sounds to good to be true but the principles seem to be sound!
I can elaborate if people are interested, but I don't want to hijack the thread
Thank you for the insight. You answered a question I have had in the back of my mind which was can you use a media bag.... I'm assuming the cat litter / iron volume you used is maybe around half cup. Am I right?
I don't have the type iron supplement you have. I only have ironite. It like a black dust... I'm hoping it will be sufficient. Btw I be interested in an more info you care to share on your set up. I'm new to this kinda "forum" way of sharing ideas. I don't want to be breaking rules or hijacking anything either. If you post the info somewhere else can you point me in right direction. Cm
(PS you can also do this in a properly sized plastic water or soda bottle)
Chris