| Using a tray of pebbles and water as a saucer underneath your phals will raise the humidity approx 10%, which is better then nothing. Grouping your plants together helps to maintain humidity as well. Any plant will do, they don't have to be orchids.
Better description: have a tray of small pebbles or gravel and pour water over the top of them until they are half submerged. Place your orchid pot directly on top of the pebbles, making sure none of the pot sits below the water line. Hope this helps.
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