Adding Fish

[jmain]

Turnover doesn't matter much although it is an easy factor for us to tell people whom are relatively new to the hobby we are going into advanced filtration systems and some maths here but its the surface area of the media that matters most. I designed a fluidised bed filter for my DIY project and eventual use (essentially sand suspended by water flow) may make some decent reading for you if you can follow the maths.... [URL="http/www.fishforums.net/index.php?showtopic=293522&hl="]http/www.fishforums.net/index.php?showtopic=293522&hl=[/URL] Essentially a filter that is relatively very small compared to externals and internals that can filter enough water to actually risk oxygen depletion in the water due to such high processing rates of ammonia.

Incase your wondering about my filtation I got an Empror 400 and have an undergrave filter with 4 small powerheads