Seachem Clarity 500 mL — Water Clarifier for Reef and Freshwater Aquariums

Seachem Clarity 500 mL is the large, economical size of Seachem's universal clarifier—designed for larger aquariums, multi-tank systems, and fish rooms that require a readily available supply of clarifier. It features the same complete polymeric flocculant formula and offers the best cost per dose in the entire range.

In a large reef system with a sump, episodes of turbidity are inevitable—bacterial blooms after a large water change, chemical precipitation following calcium or alkalinity dosing, substrate dust after sand reworking. The 500 mL bottle allows for immediate intervention without ever running out, whatever the situation.

Seachem Official Usage Protocol

• Dosage: 5 mL (1 capful) per 80 litres
• Frequency: Redose every 24 hours if necessary
• Prerequisite: Polyfill wadding or fine foam in the filter — change it when it becomes clogged during treatment
• Normal: increased turbidity in the first few minutes — flocculation in action, clearing in 1 to 2 hours
• Storage: no expiration date

Yield of the 500 mL format

• 400-liter aquarium: approximately 12 complete treatments
• 800-litre aquarium: approximately 6 complete treatments
• Multi-tank (5 x 80 L): up to 25 simultaneous treatments