Safe for Malagasy fry :-) 07/15/2013 ByLS Purchased this filter to use in a 30g fry grow out tank with an additional sponge filter and air stone. Just enough movement to not blow them around. Also added a pre filter sponge so they wouldn't be drawn into the intake. Easy to set up, the only sound is the trickle of the water. My fry "play" under the waterfall!