Reduce aquarium maintenance by creating a naturally balanced aquarium with AQUARIAN WEEKLY WATER CLEANER Aquarium Cleaning Solution. Fish waste, sludge, uneaten food and other organic compounds can cause harmful water conditions including ammonia and nitrite poisoning and breathing difficulty. They can also be difficult and time-consuming to remove especially from rock, coral and gravel. AQUARIAN WEEKLY WATER CLEANER contains live bacteria to consume sludge and organic debris, keeping gravel and glass clean naturally and boosting the natural aquarium cycle, reducing aquarium maintenance over time. Use it weekly in freshwater and saltwater aquariums to maintain a strong biological filter and a healthy, clean aquarium. At Aquarian, we understand the simple joys and relaxation of fishkeeping. For over 40 years Aquarian has supported families to provide the right care for their fish with a range of complete fish foods and water treatments. Care for your fish, both inside and out.