Hi from Pennsylvania

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One issue with semi-hydro in a home is the work of watering. More frequently is far better. Most people take them to a sink to water, since you should completely fill the container to the rim at each watering, to prevent salt buildup and exchange the air. Another issue is evaporative cooling of the medium during periods of low humidity. This can cause trouble in winter for warmth-loving orchids like Phals. unless you keep your house quite warm.