Shrivelling Vanda roots with black tips
I have a Vanda insignis and Rhynchorides Mem. Suranaree. The Vanda insignis roots are a little dead beyond hope in my opinion, though the plant is miraculously green and alive. My rhynchorides is also starting to exhibit these black tips and shrivelling roots.
I thought humidity would be the problem, but even after efforts to increase humidity this problem still persists. I fertilise them with gaviota at 1/2 strength twice weekly, and I give them indirect sunlight. I water them with tap water, that has chlorine and fluorine and other minerals in it (I didn't add these in), so can anyone diagnose the problem?
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