How large a pot is recommended and how long is extension cord?

Will this work in a 50 gallon small pond insert

I am using a container that is about 3-5 gals at most, is about 12 inches deep, and it works GREAT! I believe as far as width, it should be at least 20" or better.... the bell fountain head is ideal for the small circumference.

Hello, That item would fit nicely in planters starting at 16 inches deep and 12 1nches wide. The extension tubes with nozzles are telescopic making it easier to adjust the desired height. The power cord is 6 feet long. Hope this helps.