2. Water-Tank The greater surface area allows for increased gas exchange Typically allow 1 inch of healthy fish per gallon One inch of fish per four gallons for the first six months After 6 months one inch per 2 gallons

3. Water-Salinity Range of 1.021 and 1.024 for saltwater Freshwater should be close to 1.0

4. Clean Water (Filtration) Mechanical- physically remove suspended particles Biological- bacteria used to remove harmful molecules, helps with nitrogen cycle Chemical- activated carbon chemically removes toxic substances

5. Oxygen Air pumps- size needs to correspond to tank size Air stones

6. Water temp Heater-check your fish for their preferred temperature

7. Lighting Don’t expose your fish and fish friends to light 24 hours a day Use of a timer provides 12 on and 12 off cycle for fish