i'm thinking of getting a fluval u2 filter for my 35ltr tank. it has a betta fish, some shrimp (red cherry and amano) and a snail (and apprently a lil snail that got in on one of the plants i bought recently sneaky lil bugger lol).
my main question is this: can you adjust the actual flow speed of the water on this filter? with having the betta we dont want the flow too strong as they need/prefer slow flowing water. i was thinking of setting it to the bottom outlet so that the water surface is stable so he can build his bubble nest. hes been trying recently but bless him it keeps breaking up. this could be because he doesnt know how to make them or that the surface is moving too much so i figured if i can get a filter that puts out water underneath the surface then he should be fine for bubble nests
hes been trying to build one for a few days now, attempts it a couple of times a day.
does anyone have this filter and can you let me know your experience with it?