help with water movement please

[mikellini]

If I were you, I would strongly consider the Maxspect Gyre. Although it is made in China, there's nothing else like it (so it's not like they copied the design of others, ahem Jebao cough cough). Cost is less too, but judging by the videos, the flow is unattainable by using regular pumps, so it's a better option as well.