Do I need a seal coat for FlowCast SPR? What product do you recommend?

We recommend seal coating any surfaces that will be submerged in FlowCast SPR. Seal coats help prevent air and moisture migrating out of submerged materials, which can cause bubbles. UVPoxy is the preferred system for seal coats as it is a faster curing resin made for applying in thin layers. FlowCast SPR can also be used but will not get to the tacky state as quickly. Cured seal coats should be abraded and cleaned before proceeding with pours.