I will be looking at tanks system and how it works with different species, which all require different living condition within the tanks. From their diet, temperature, water quality, filtration systen, ammonium content, salinity, light, amount of water and tank size. I will be monitoring and regulating all the above, for a period of time. This is part of my mini-project within my module and my first tank will be a piranha tank with containing 9 piranhas.