Filter for shrimp tank
One of my other threads got me re-thinking the filter setup for my shrimp only tank. I'm not asking for a specific filter recommendation, but rather the overall approach.
1)Mechanical filtration: You know that tan-brown gunk that usually gets trapped in the filter? Do you try to filter the water as much as possible, or rather let chunks of this get recirculated? I once saw a successful CRS tank with no mechanical filtration, the water had all kinds of debris and stuff floating in it, and the shrimp seemed very happy and picking at everything.
2) Biomedia: do u prefer sponge or any of the hard ceramic / rock / sintered glass things? Secondly, do you purposely try to go overboard with the biomedia (which is what I hear some Asian Bee shrimp breeders do) or just use as little as necessary? In my tank setup, the biomedia is actually after the filter outlet, where the stream of water sprays on a small pile of Biomax and lava rocks. It seems the shrimp like to gather there occasionally and pick at the rock. Plus I assume the rest of the surface area of the tank is also doing some nitrification. I have never seen ammonia nor nitrite after the initial cycle, but have been wondering if I should add some more biomedia "on purpose".
3) Do you run any kind of setup that is for de-nitrification, or do you just count on plants to do it?
4) Do you use any chemical media like Purigen?
Basically, I am trying to decide between "low tech natural" and "super clean".