I have a 20 gal tank, I have 2 filters on it right now, a TopFin 20 which came with the kit I bought, and a Penguin 150 Bio Wheel rated for a 30 gallon tank,
I'm not sure what the wattage of my lighting is because i've thrown away the box =/ and no live plants
4 australian rainbows
6 Flame Tetras
3 Long finned Tetras
3 See through looking tetras, forgot the name
1 crab
Also on a side note, petsmart has a Freshwater Master Test kit for 21 something shipped, Is this a good deal?