(a) A 60-litre freshwater fish tank kept in household conditions contains 3 full size goldfish and one medium-size plant

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A A 60 Litre Freshwater Fish Tank Kept In Household Conditions Contains 3 Full Size Goldfish And One Medium Size Plant 1 (53.89 KiB) Viewed 24 times

(a) A 60-litre freshwater fish tank kept in household conditions contains 3 full size goldfish and one medium-size plant. According to recommendations one fish per 15-20 litres of water creates optimal conditions for fish grow. The fish tank is equipped with a two-phase (biological and chemical) water filter with a filtration rate designed for the aquarium capacity. Fish are fed twice-daily and the excess of biomass produced on the filter is removed fortnightly to maintain a good status of water quality. 0) Discuss water quality cycling of nutrients in this fully controlled waterbody [4 marks] (Q3 continued on next page) 3 (Q3 continued) (m) Elaborate how an addition of 3 fish and high-intensity light may impact water quality in the fish tank. [4 marks]