As you can see these specifications are much more forgiving than those for certain tropical or marine fish. Guppies mature quickly and usually only grow to be about one and a half to two inches long. There small bodies and feathery fan like tails add a lot of interest to the tank. They are just fun to watch. Look at the fish every day to make sure they appear to be overall healthy and happy. This may seem silly, but the main cause of sickness in fish is stress. So, a happy fish is a healthy fish. Check to see that all lights and filters on the aquarium are plugged in and functioning correctly. Feed the fish daily. A fish lover can choose from small cylinder shaped tanks that can double as a coffee table lamp to wall huge wall sized aquariums. While, there are some basic things that will be included in most kits, such as, a filter, some substrate or coral and sometimes lighting, the kits themselves can vary greatly. Once your plants are established in a clean, well lighted tank, you must care for them by making sure they receive the nutrients required for healthy growth. Plants need both macro- and micro nutrients. Macro nutrients are usually found naturally in tap water and in the fish themselves. These nutrients include nitrates, sulfates and phosphates. Make sure to never use any type of cleaner or detergent when cleaning the tank. This will be fatal to the fish. After removing the algae, finish by wiping down the rest of the tank with a towel or soft rag. You may have to repeat this a few times. Try to rinse the rag or towel frequently to remove all the waste. Basic Aquarium Plant Care Most people who purchase an aquarium do so for it's visual appeal. People are known to spend more money on decorating their tanks than the fish and tank itself. It's a good idea when purchasing these decorative pieces that you consider buying pieces that are both gratifying to the eye, but also useful tools for the balance and maintenance of your tank.