Industrial Water Softener Low Flow Channeling Calculator and Guide How do you size an industrial low flow channeling water softener? The following calculations can be used as general guides for commercial and industrial water softener sizing. For sizing of the water softener itself, see our industrial water softener sizing calculator instead. Industrial Water Softener Low Flow Channeling Calculator / Guide Tank Diameter In Inches: GPM Minimum Flow Rate To Prevent Channeling: Please note: there are many variables beyond the scope of the calculator below, so this guide should be used for quick estimates only. For detailed information and calculations, email or call Nancrede Engineering at 888-56-WATER (569-2837). You’ll find our engineers helpful and our friendly customer service without equal! Nancrede Engineering also offers preventative maintenance, engineering consultation, equipment leasing, financing, and build, own, operate options. Let us know if you would like information on how these services can help you reduce downtime and capital risks. If continuous flow falls below minimum flow rate, a recirculation pump is suggested to prevent Channeling.* *Channeling occurs when the flow rate is too low for the size of the softener tank causing water not to flow through the whole bed of the water softener tank resulting in hard water leakage.