Aquarium Additives, including: water cyclers, chlorine removers and trace elements make aquarium water safe for marine animals, and should be used when preparing for new tank setup or water changes. Cycle aids, like TLC's beneficial bacteria products help you quickly establish the nitrogen cycle and avoid fatal "new tank syndrome". To recreate natural water conditions for your aquarium, you may also need testing liquids, pH buffers, vitamin supplements, plankton, and aquarium salt. Browse our web store to see what products are right for your aquarium!