To flush LECA medium with tap water or reverse osmosis water?

[Orchid Whisperer]

Originally Posted by OrchideeNormus

Possibly, they don't exactly keep great busines practices so I'm not hopeful that they can or will even want to provide me with that information. I can try on Monday, hopefully they will actually be there lol

If they are providing drinking water to you, they are required by law to test it, and are also required by law to make that information (test results) available to you. You have rights here, and as operators of a public water supply, they should know this already.