Those roots are water-storing organs called rhizomes. I usually cut them off when repotting because I'm always putting my plant back in the same pot. In the ground, those rhizomes can go down almost a foot, they love high shade, under a tree with very high lower limbs. Hanging from a branch on the north or east side would be great.
Rain water is much better for any plants sensitive to tap water chemicals, of which spider definitely is one. I wouldn't dunk, just water regularly with it. Distilled water or that from a dehumidifier collection bucket are also good, no tap water chemicals.
That IS beautiful weather, nice!