spstimie

My background is all salt water and normal water flow is 20x-40x turnover. So a 40 gallon tank has 800 gallons per hour plus with about 10x turnover through the filter. I am moving my 1.5 gal plant tank into a 3gal. The 1.5 only had an air stone for water movement and no filter. I am cycling the 3 gal with a hang on filter, but it is rated for a 10-20 gal tank(can't find flow amounts for it). So how much water do I actually want to move? Before I purchase or build a new filter.