Is it getting any humidity. I cannot give them enough in my house.

Humidity is very important. But using hard water and letting the soil dry out means there's a rapid build up of minerals (particularly lime) . Better to use rain water or some other water with less mineral content.

Ahhh. Do you have a rain barrel, Tropic. I am dying to have one. I am considering making one from a strong plastic garbage can.

My water is ground water which doesn't have a high calcium content. I'd like to collect rain water but often use pond water. Plants take out much of any mineral content (and fish provide a bit of 'other' fertiliser).

Keely, I an in a city, with pipes about 125 year old running underground to each home. I am at the end of the route the water goes thru, so I get all metal and too much fluoride. I had brown tips on my spiders and fern. When I finally accepted my water could be the problem, the brown tips stopped developing.