Do I need to leave the “undergravel filter” in my aquarium?
When you have any fresh water tank under gravel is not really the greatest way to go. Therefore yes you can take the under gravel filter out. However, you need more than the bubble tube for the tank. The bubble tube offers circulation by moving the water from the bottom to the surface where oxygen exchange takes place, but you still need to filter out the waste from the fish. There are several options for this one of which is a small inexpensive corner filter. These have cartridges that can be replaced monthly and your fish will thank you. Now if you are looking to upgrade to a larger tank the best advice is to decide what you would like to put in the tank. There are several filter options you can decide on. One is the filters that hang on the back of the tank. These will provide good filtration and circulation for the tank but be sure that you have a long enough tube to suction from the bottom to the middle of the tank. If you are pinched for space behind the tank then you might consi
