Other Information : THESE NEW STYLE GLASS TANKS ARE LEAK TESTED AFTER MANUFACTURE AND ARE CONFORM TO BS4875-8 (1998) CLAUSE 7.3.6 IMPACT TEST. THEY ARE MADE FROM STRONG LONG LASTING GLASS AND CONTAIN A VAC FORMED LID WHICH A LIGHT CAN BE FITTED INTO. (WHICH OUR LOW VOLTAGE LIGHT IS MOST IDEAL). IDEAL FOR ALL TYPES OF FISH. HOLDS UPTO 12 LITRES.