So I got two of these installed in my 5 foot by 18x22 tank yesterday.. I tried a lot of locations for the pumps but settled on one at each end on the top of the tank near the front wall.. I spent a bunch of time on this and it freaked my sailfin and foxface out a lot... they really stressed for a while...
I tried M3 which is tandem master slave wave maker mode where the master pulses wakemaker mode forward then it switches to the slave in wave forward (master spins backwards I think)... I wanted this to work but it just simulated a storm in my tank even at the lowest flow rate (1 out of 20). When the one spins backwards it still pushes a lot of water and I never got that nice back and forth swoosh I got with the current pumps.
So I settled on mode 6 (m6) which is just constant on for master (slave off) and then it switches to slave on constant with master off. This is at flow rate 1 (out of 20).. These things push some serious water.. and are dead quiet. I have them on a 5min timer in each direction..
I wish there was a mode where master does classic wave maker for a set time with slave off, then salve on classic wave with master off. Like M6 but with classic wave pattern.
I am not 100% happy with the outcome but the flow in my tank is good.. I really miss the swoosh back and forth the Current Eflux gave me but those pumps are so unreliable after about 6 mos. I might just buckle and get evotech MP10s or MP40s (if I can get the 40s to push very low flow if I want that)..
For the price these Hyggers are nice so far but their "wave maker" mode doesn't give the nice steady back and forth sway motion... Just seems to stir the water up a lot - very turbulent. Nice for simulating a storm for cleaning up detritus pockets but I don't want that on all the time. The impellars don't stop ever with wave maker... I bet that helps the life of the pumps but it doesn't give me that nice swoosh back and forth I was after. But again for 78 bucks a side pretty nice pumps if they last. They have a 1yr warranty.