Ive had my 6025 for a few months now ( cant remember how long
) I have a couple bad things to say,but they would be easy fixes for Tunze on the next batches.
#1 Thing I dont like is the little tabs that hold the bracket to the magnet break too easily.
#2 Mine dosn't like to restart after I turn it off for tank cleaning.I have to bang it on the side of the tank untill it starts,then put it in the water just to have it quit again
This is how I broke the tabs in the first place,sometimes I want to throw it through the window.
On the positive side,flow is fantastic,not strong in one place but nicely disperced(sp)It dosn't seem like much if you hold your hand infront,but they move alot of water. If you brake the tabs like I did,all you have to do is glue the bracket onto the magnet holder.
Ive been planning on getting another one,and unless something better comes on the market at a decent price,the problems Ive had wont stop me from getting a second one.