We need to replace a sand pool filter and are wondering if we are unable to complete it and have to put bags over valves until morning when we call a profesional if that would damage anything? – Water Quality and Health Council

Question:

We need to replace a sand pool filter and are wondering if we are unable to complete it and have to put bags over valves until morning when we call a profesional if that would damage anything?

Answer:

This should be fine for a day or two.