BTW, it takes 9 minutes to drain 180 gallons worth of water and I can place that water anywhere a garden hose goes, no need to screen for shrimps, plants etc and it'll drain to 1/8".
You toss it in, plug the pump in and it'll drain asap.
If you have a long distance to fill a tank, simply use the bath tub, or a barrel outside, pre mix the water with dechlor/warm temp corrected etc, Marine saltwater .......whatever you want, then rinse the pump off and add it in there and attach the other end to tank to be refilled, 25 minutes later, you have changed 180 gallons of tank water.
Now you can use something like this to save you a great deal of time, or use a faucet and the water pressure in your house etc, but this might be easier and more convenient.
I hear folks whine about water changes or how they cannot do them(mostly from the PPS crowd) for every sort of reason..........yet a pump like this really shows, all you need to a little thinking and you can clean the tank easily.
My 9 minutes draining also is not wasted or the entire 25 minute process, I clean the glass and prune or clean the filter.
I want to see anyone measure their NO3, PO4, K, Ca, Mg and clean their tank/filter in 25 minutes a week on a 400 gallon tank.
I prefer the water changes for other reasons, sloshing water all over the place and placing your head under water, you can clean and prune/work on the tank much better when it's 1/2 drained.
This device is great for that.
So are automated hard plumbed methods using either a solenoid and timer or a semi manual valve to drain/fill.
This sump pump is particularly useful for Marine tanks since you mix the water up ahead of time and cannot use the tap water pressure.
Thanks so much for the helpful advise. The bathtub is a great idea. I live ijn an apartment and lugging garbage cans around to fill a 180 is not my idea of fun, neither is using water pressure to drain the tank.