Green & Yellow Snap Beans..Fertilizer Question

I planted containers that are 8 feet long with Green and Yellow Snap Beans.

I used Peat, Vermiculite, and Pearlite as the growing medium. I need to fertilize them, but I'm not sure what kind of fertilizer to use.

I'm thinking that a 20-20-20 would be ok, but the Nitrogen might be too high.

Can someone help me with this please.

Thanks.

Darrell

I prefer 5-10-10 or 5 -10 -15 for snap beans.

Thanks Farmerdill. Appreciate ya.