Small Tanks That Are Easy To Keep
Small tanks are much easier to keep, especially if you compare it to the hard work it takes to maintain a conventional or super sized aquarium. For starters, you have a very limited surface area to work with, and that means you don’t have a lot of glass or plastic panes to scrub in case the algae growth becomes a problem. Seriously speaking though, small tanks require a limited number of “residents” only. In fact, in such cases, the less finny residents you have, the better the more stable the aquarium environment becomes. That also translates to having fewer maintenance issues to deal with.
Additionally, the environment for mini aquariums like these can be easily controlled with just a few tweaks, especially if you are taking care of salt water or brackish marine life. Aside from the temperature, there should also be careful regulation of the salinity level of the water and the amount of oxygen that this artificial aquarium environment can sustain. All these can easily be calculated with smaller aquariums. Better yet, if your salinity is too low, it should only take the addition of a small amount of salt to remedy the situation. As you can imagine, there are fewer long-term supply costs associated with smaller aquariums.
The worst thing that owners of small tanks can do is to overstock such containers with all manner of water dwelling creatures. Overstocking often leads to the quick accumulation of too much waste (especially ammonia and nitrite) that the small sized filters cannot efficiently detoxify. This can prove very dangerous to your finny pets as well because the waste is directly toxic to fish life.
If you have found yourself in this situation (which usually shows up as cloudy aquarium water), it is generally recommended to change up to 50% of the water per day until the filter stabilizes with enough bacteria to detoxify the ammonia. Another idea would be to remove some of the fish to another aquarium (or a pet store) to help reduce the production of even more waste.
Overall, there is a lot of discussion as to whether large aquariums or small tanks are easier to maintain. Because of easier initial setup and cheaper long-term cost of supplies, small aquariums seem to be the new craze!