Product: Tetratec replacement Bio Balls for filter EX 400/600/700/1200
Bio Filter Balls are designed to be used with Tetratec EX 600, EX 700 and EX 1200 and other external filter for aquaria up to 500 litres in size.
Bio Filter Balls provide a large surface (62 cm2 /ball) area for the growth of beneficial bacteria.
Rinse in lukewarm tap water before using.
Can be reused several times.
Use 1 for 800 ml pack for Tetratec EX 600 and EX 700 and 2 packs for Tetratec EX 1200.