For beautiful freshwater aquariums: combats all algae species fast and intensively. Controls and eliminates algae in aquariums Not harmful to fish and microorganisms when used correctly. Crystal-clear water. Combats all algae species. Application only in the morning. Before use a partial water change of 30 % is recommended. Ensure sufficient oxygen content by means of aeration during the treatment. Contents: 1 bottle Algol. To use: 10 ml/40 l Wasser. Example with 60 l aquarium: 15 ml. PRODUCT INFORMATION Appropriate, long-term algae control: Excessive algae growth always occurs when a surplus of nutrients (phosphates and nitrates) are present in the water. That’s why long-term algae control works in two steps: it combats algae with the anti-algae agent JBL Algol, then in step 2 it safely binds the nutrients. For this purpose JBL PhosEx ultra is ideal. Adding algae-eating animals, such as sucker catfish, shrimps and snails can also be a great help. Kindly take note this is a Pre-order item. It will take approximately 3-5 working days to arrive after the order has been placed. Pre-order items are subject to supplier availability. If stocks run out, we’ll notify you for a refund or alternative. Thank you for your patience and understanding.