Bulk Green Seaweed for Fish - Extra Large Sheets (5.10 Oz Approx.) - Stays Intact Longer New premium seaweed starting April 2017! Now with nearly 1 oz more. Made with high quality dried seaweed for algae eating fish. New seaweed stays intact even longer than before keeping your tank clean and fish happy. No additives! Provides needed vitamins and nutrients. 100% seaweed. Seaweed rigorously tested to ensure quality. Sheets easily tear for convenience. Buy in bulk and save! 50 XL Sheets (8in x 7.5in) =100 Half-Sheets. Seal-bag keeps product fresh.