Lo-Chlor FastStart Tech (FST05-1) is a 5-gallon jug of advanced pool startup treatment that rapidly establishes balanced chemistry. It removes metals, prevents staining, boosts filtration, and stabilizes pH/alkalinity, treating up to 100,000 gallons for quick, clear water during new pool openings or spring startups.5 gal jug; treats up to 100,000 gal (1 gal per 20,000 gal); biodegradable formula.For new pools, spring openings, or heavy metal issues; safe for all surfaces and sanitizers.Add 1 gal per 20,000 gal to deep end; tools: none; circulate 24-48 hours, brush walls.Eliminates metals/stains; speeds startup, reduces chemical use, protects finishes.