Don't even think about the "nano's", get the 6101's live with a little larger size and forever be happy! With the 6101's and the 7095, you are done with adding any thing else in your tank for water movement. I have a 36"x24"x24" with two 6101's and a 7095, the jumper I have set is the slower one (14 volts I think) and the water movement is awesome and yes I have a LS bed (2-3"), the Nano's are well, a good try. If you are worried about the larger foot print, don't, it just will be a part of your tank. I have a Sequence Hammerhead pump for my return (basement located) but I have throttled way back, maybe 600-800 GPH (I want slow water moving through the sump/fuge and 100 gallon rubber maid water container, the Tunze's is all you will ever need! Trust the new Streams and leave the Nano's to people that don't want a controller.