Hi. Good luck with your tank. You also need to know how to properly "clean' a tank. Overcleaning, removing all the water will actually harm your fish because you loose all the good bacteria. I have a friend who used to take all the fish and put them in a bucket so she could drain all the water and wash the gravel. Big no - no. I assuming there is a article at this site on how to maintain your aquarium. I've had tanks over 20 years, they are actually very easy to take care of and never get gross it you understand the
nitrogen cycle and maintanance. Also dont over stock--thats a huge beginner mistake. Overstock=poor water quality=dead fish=more algae etc......