The hose trick works for finding suction-side air leaks.

Yes, it’s a solid DIY method. You run a garden hose over suspect fittings and joints while the pump is running. If the water from the hose seals the leak, the air bubbles in the pump basket disappear. That’s your spot.

The logic is simple: suction-side leaks let air in, not water out. Dumping water over a fitting temporarily blocks the air from getting sucked in. When the bubbles stop, you’ve found the culprit. Common failure points: pump lid o-ring, drain plug, valve stem seals, and any threaded connection before the pump.

One tip: work in sections. Start at the pump, work your way back toward the skimmer. Have a helper watch the pump basket while you spray. And don’t use a pressure washer—you’re not trying to wash anything, just create a temporary water seal.

You’ll still need to replace the o-ring or tighten the right joint, but at least you know exactly where to look.