I only have 2. They're inside and I just give them 1/2 a cup of water once every week or two.. I don't have any outside yet. I have feed them seasol a few times and they didn't mind it other than that I just leave them alone mostly. I've had them about 2 years and one has flowered twice and has a third new spike on it now 😄👌 Sorry I'm not to much help 🙏 Your hanging orchids look great!!!