I have 3 fluval flex tanks the 34L , 57L , 123L
34L fry tank currently.
57L Guppy and Juvenile Mollies.
123L Tetras, Rams, Corys, couple of adult Mollies.
I feel the output flow on the 34L is maybe to high and the filtration slats a little to big for young fry although it does give them an...