Ok to water from a shared bucket?

[james mickelso]

My landlord has discouraged me from watering all my orchids with the hose along with the problem of how much TDS as Calcium carbonate, manganese, and sodium chloride is in my water. Before I started using RO to water my orchids they languished. They grew poorly. But buying water by the gallon is expensive too. So I blend. Getting an RO unit is not doable either. And my orchids sit on shelves above one another. Here's my set up.