I have a Tunze 6155 wavemaker that was running on my 180 sps dominated tank. I’m in the middle of revamping the tank to lps and zoas so I no longer need this much flow. I’ve had the wavemaker for 6 months and it has worked flawless. The control knobs are on order and will be sent to the buyer as they have been removed by my 2 year old. Any questions or offers feel free to message me. The pump is in excellent condition. Thanks for looking. Asking 260.00