A tale of two paphs- have a Hsinying cross (on L) & delenatii Destiny cross (R) both sitting in North window. Both plants I’ve had for 3+ years. Both get a good soaking once a week with water from hubby’s 125 gal fish tank & occasional fertilization. (All my orchids seem to love that water) Potting medium is fine and not crowded in pot or over potted. Delenatii blooms like clockwork, but Hsinying refuses. It looks fine. Seems happy and even grew an offset year ago. Is there something I’m missing or I could try?? Thanks in advance.