5 Things to Know Before Draining a Fiberglass Pool

Never fully drain a fiberglass pool The shell is lightweight and relies on groundwater pressure to stay in place. Emptying it completely risks the pool popping out of the ground or cracking.

Drain only 50-70% at most Going beyond that is a gamble with the water table. Check local groundwater levels first—if high, don’t drain at all.

Call a pro for major draining If you need to drain for repairs or deep cleaning, hire a plumber or pool professional. They know how to avoid structural damage.

Refill slowly from the shallow end Pour water in gradually, not directly onto the pool floor. Keep the skimmer submerged while filling to avoid running it dry.

Skip draining for routine cleaning Just lower the water a foot or two with a sump pump. Unless you’re replacing a liner or fixing a leak, leave the water in.