I'm redoing my 75 gallon
tank as a shrimp tank. The tank will have Cherry Reds in the near future, and some sort of filter feeder further down the line. I could just buy a massive sponge filter and hide it in a back corner, but I want to do something novel.
Past shrimp I've had loved to hang out on the sponges and pick off bits of food, so I'm actually planning to make the sponges a major feature of the tank. The sponges would be half burried in the sand like an undergravel filter of sorts, and cleaned as an undergravel filter instead of removed from the tank for cleaning. (Once I bury the piping, I'm not going to want to dig it up for weekly cleaning.)
I'm thinking of using an array of smaller sponges, like the Bio-Filter 3 Sponge
with flexible tubing burried under the sand, and a decent powerhead in the back corner, perhaps running to a spray bar for areation.
A) Anyone know the flow requriements of shrimp vs fish?
B) How much are those sponges going to drag down my flow rate?
C) Would you do a spray bar or a venturi?