Blue Planet Aquarium Algae Control Blocks effectively controls most algae common to freshwater fish aquariums. It kills growing algae and prevents algae from recurring.
HOW TO USE: To control algae, and one piece per 20L. of water or one complete block per 120L of aquarium water. This block is best used as a preventative or when algae first appears or after cleaning an algae infested tank. The block will dissolve over 7-14 days depending on water conditions and rate of flow from filter. If possible, control the amount of sunlight or artificial light to reduce the growth of algae. Repeat only when algae appears.
DO NOT OVERDOSE. All fish benefit from a fortnightly water change.
USAGE GUIDE: To calculate approximate pond capacity Length (cm) x Width (cm) x Depth (cm) and divide by 1000 for litres.