If you send unfiltered water through the sheer, it's going to get clogged with debris.
In my opinion, a single pump is enough.
The pump can get to 130 gpm as long as the plumbing is big enough. Plumbing size is critical.
The amount of water going to the sheer depends on the height above the water and how far you want it to project.
For a 3 foot elevation and a 15" projection, you need about 12 gpm per foot.
For a lower elevation or less projection, you can use less gpm/ft.
Ask the builder about automating the valves to do everything with one touch.
If you really want two pumps, I would definitely put a filter on both pumps.
You need a big cartridge filter to minimize the resistance of the filter at high flow.
If you want to use a second pump, you might want to use a dedicated feature pump, which is designed for fountains.
The ePump is a high head pump, which is not good for a fountain, which is low head.
Using a high head pump on a fountain uses a lot of unnecessary energy and is loud at full speed.
In my opinion, a single pump is enough.
The pump can get to 130 gpm as long as the plumbing is big enough. Plumbing size is critical.
The amount of water going to the sheer depends on the height above the water and how far you want it to project.
For a 3 foot elevation and a 15" projection, you need about 12 gpm per foot.
For a lower elevation or less projection, you can use less gpm/ft.
Ask the builder about automating the valves to do everything with one touch.
If you really want two pumps, I would definitely put a filter on both pumps.
You need a big cartridge filter to minimize the resistance of the filter at high flow.
If you want to use a second pump, you might want to use a dedicated feature pump, which is designed for fountains.
The ePump is a high head pump, which is not good for a fountain, which is low head.
Using a high head pump on a fountain uses a lot of unnecessary energy and is loud at full speed.