Below is a brief description of my current (10/07) feeder fish holding tank setup. Any other descriptions on this site will be updated shortly.

Currently I am using a 45gal. tub (with about 35gal. of water) to house the feeder fish and a 22gal. tub for a sump/filtration. A total of ~57gal. of water.

In the feeder fish house is the fish, aquarium gravel over a 29gal. undergravel filter powered by 2 forward-flow powerheads, a minnow hide box (makes catching the minnows much easier), a Seachem Ammonia Alert, a return pump to the sump and a 1" siphon U-tube that brings the water back from the sump into the fish house. Sound complicated? Its not!

The pic above is numbered for the following items:

1) Return Pump
2) 1" Siphon Return U-tube
3) Minnow Hide Box
4) Seachem Ammonia Alert
5) Powerhead operating Undergravel Filter
6) Dual Airstones

The Sump/Filtration Unit currently houses 1 Powerhead driven 10gal. Undergravel Filter, a Magnum 250 Canister Filter, a Fluval 3 Internal Filter full of Seachem's Purigen, the Drain Pump for the system water change and the Float Valve.

The pic above is numbered for the following items:

1) Float Valve
2) Magnum 250 Canister Filter
3) Fluval 3 Internal Filter with Purigen
4) Powerhead operating Undergravel Filter
5) Drain Pump

Basically, the filters filter, the Drain Pump pumps water outside for water change and the Float Valve allows clean fresh water in and stops it at the proper level. The reason the float valve is held up with a rubber band is to prevent chlorinated water from entering the system during the drain portion. It reduces the use and cost of dechlorinator and speeds up the drain portion by not allowing more water in while the setup is draining. Once the system is drained (~20mins) the drain pump is turned off, the float valve is released, dechlor is added and later the rubber band will be reset onto the float valve. Water change done! No Muss, No Fuss.