Sprinkler leaks usally appear as soggy spots, low rigidity, or effervescent at heads
https://threadvistax.com/s/SdM3mCH701VOxovUwKt7I
Sprinkler leaks most commonly look as soggy spots, low force, or effervescent at heads. Inspect risers, lateral traces, and valves, then fix cracked fittings to fix formulation efficiency.