JBL Tropol – Blackwater Extract Conditioner Transform tap water into tropical, blackwater-style aquarium water ideal for South American and Southeast Asian fish species, shrimp, and planted setups. Ideal for setting up new tanks and during routine water changes. Natural Light Filter: Creates crystal-clear, tropical water while acting like "sunglasses" to filter out specific light spectrums that fuel unwanted algae growth. Fosters Fish Health: Rich in natural humic substances from peat and tannins from oak bark to support healthy skin, gills, and vibrant colors. Reduces Acclimatization Stress: Simulates native blackwater habitats to ease stress for neon tetras, discus, dwarf cichlids, and other soft-water species. Algae Prevention: Naturally inhibits algae growth without using harsh chemicals. Dosage: 10 ml per 40 liters of water (e.g., 15 ml for setting up a 60 L tank; 5 ml when changing 1/3 of the water). Sizes: 100ml 250ml