Notes on my Peace Lily

Mine's been looking droopy despite consistent watering, so I finally checked the soil pH and realized my tap water's way too alkaline for what Spathiphyllum actually prefers. Switched to collected rainwater a month ago and the new growth is noticeably crisper. I always assumed these were bulletproof, but I've learned they're pickier about water chemistry than people usually mention. Has anyone else had better luck since adjusting this?