My home has a Square D Homeline Series Panel. I have a new heated whirlpool tub that requires a 30A 120V GFIC circuit breaker. It appears that Homeline only offers a HOME230GFI which is a 2-pole. Questions: Can I only use 1 side of that breaker? or Is there another make/model that comes in a 1 pole that will fit in my Homeline panel? or Any other not too crazy $$$ options? Thanks in advance!!