There are also floating plants. As their name suggests they simply float in the tank they do not need to be anchored and will not usually require fertilizer. The only regular care required is to make sure that water droplets are not regularly deposited on the leaves, as this will cause decay. Water lettuce and Lily pads are examples of floating plants. Be sure not to clean the filter too thoroughly as it contains helpful bacteria that aids in stabilizing the chemical balance in the tank. During the monthly cleaning, scrape and remove all algae from the surface of the tank. If you find you are having a significant amount of algae, consider adding an algae eater to the tank. Another cause of stress in fish is overcrowding. Make sure there allow about ten gallons of water per one inch of fish. Account for the full grown size of the fish, not the size of fish when it is purchased. The incubation period for most sickness in fish is about thirty days. So after about a month, if all is well with the tank and the fish seem to be adjusting well, then it is okay to introduce some new marine life. When cleaning the tank, you will need remove of stir the gravel to remove sediment that could possibly change the chemical make up of the tank. Use caution when cleaning an acrylic tank and be sure that the cleaning supplies being used will not harm the tank in any way. The best thing to use to remove algae is phosphate drops. This should be especially regarded when there are baby guppies in the tank, because guppies will eat their young. The next most important feature to caring for any fish is appropriate water regulation. The specific temperatures are listed above, but it is also important to make frequent water changes. Take a trip to the pet store in order to gather information and window shop to determine the types of fish you wish to keep in your aquarium. Carefully research these fish to ensure that they are compatible for water temperatures and P.H., as well as the food that they eat. Be careful not to put prey and predator together in the same tank.