Quote Originally Posted by badflash
In a system like I am building, these would go between the pool and the beds. The beds are higher than the pool so the water can gravity drain back. The pump needs to be able to lift the water to the top of the grow bed at a flow rate high enough for the fish.

I am shooting for 25 GPM in an 800 gallon system. This will give me 2 turn overs of the water volume every hour. I probably won't use the return on the pool as it isn't large enough to handle 25 gpm.

The CWPPA-1/6 looks to be better built. The PAQO-9000 looks to be made of plastic. The CWPPA-1/6 will need to be covered as it is metal. Once the greenhouse is up, that won't matter.

Would I need one of these types of pumps if I am just planning on using filtration and air. I do not want to mess with grow beds.

Are there pros and cons to having grow beds?