Now the Yarmouth turtle tank -12 feet in depth and width holding 250,000 litres of water along with George the 3ft long green turtle - has been partially emptied for the festive season.
Thousands of litres have been removed to lower the water by a six inches and keep the sensitive alarms clear.
Displays Supervisor Christine Pitcher said: ''Last time an aquariist had to dash to the centre in the middle of the night, so we're not going to take any chances.
''Sprouts are really healthy for green turtles.
''The high levels of calcium in them are great for their shells, the fibre is good for their digestion and they also contain lots of beneficial Vitamin C, sulphur and potassium.''
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(image credit: Flickr user pkingDesign)