Water Changes

Even if the water looks clear, there are still particles of food and waste still present. This not only causes a buildup of visible, physical waste, but also issues with nitrogen and phosphate levels. Algae could possibly grow, and oxygen levels may drop, which could cause aquatic life to fall sick or get stressed.

Water changes should take place around once every week, but not too often as this may rid the tank of the beneficial bacteria colony that serves as your biofilter.

When changing the water for an aquarium, you should change around 10-15% of the water content for a smaller tank (5-10 gallons). For larger fish tanks, or if it is heavily stocked, 20-25% of the water should be changed.

The Process:

1. The water. Firstly, remember to prepare the water that you will be using as replacement. Tap water is fine, but be sure to allow it to sit for a few days, and follow the tips of dechlorination stated above (This is Important, as chlorine WILL KILL your fishes). It is best if the water that you are adding is the same temperature as the water in the aquarium. This is to reduce the stress for fishes. If you are maintaining a saltwater aquarium, follow instructions on your aquarium salts to reach appropriate salinity levels for the fish. You can do this in advance and store the water.
2. Gather your supplies. This should be done before you begin changing the water. Supplies required include:
   • Sponges
   • Gravel/sand siphon
3. Cleanup. Siphon the debris at the bottom of the tank to get rid of some of the detritus that has accumulated since the last water change. Do this slowly so as to not harm your fish. Use the sponge to gently remove any buildup on the glass inside your fish tank. Repeat this process a few times to ensure debris gets cleared up.
4. Slowly and gradually add in the amount of water you removed after cleaning. Test the water to ensure that you reach the appropriate pH and saline levels. Plug your filter in to remove any remaining debris floating around.