If you want to do a little do-it-yourself work and save some money on a rain barrel pump. This one along with a mesh filter should do the trick.
Note this pump has 1/2″ barbed fittings. I suggest a using 1/2″ garden hose which can pump out a maximum of 9 gpm.
Here is a video showing how someone has configured a similar pump with their rain barrel.
For boats, RVs and more! Choose the pump thats best for your application. 1/2 in. hose barbs with sealed o-ring ports. U.S.A. Seal Type: Viton, Pressure (PSI): 45, Inlet Port (in.): 1/2, Outlet Port (in.): 1/2, Temperature Capacity (deg F): 130, Flow (GPM): 3.5, Power Supply: 12V
|Item Weight||4.3 pounds|
|Product Dimensions||13 x 5 x 4 inches|
|Item model number||04406043A|
|Manufacturer Part Number||04406043A|
Here is the strainer: