Oncidium leaf spotting and bulb browning SOS

[estación seca]

What do you mean by weakly weekly? How much magnesium and how often? What water are you using? If it's tap water, do you know the mineral content?

[YokaYampi]

Originally Posted by estación seca

What do you mean by weakly weekly? How much magnesium and how often? What water are you using? If it's tap water, do you know the mineral content?

Woops my bad, it's called K-lite 3% magnesium
K-Lite Orchid and Epiphyte Fertilizer › First Rays LLC

i fertilize once a week, water with Distilled water