Tetratec ex700 advice

[Andyskoi]

Hi i bought a new tetratec ex700 external filter around 5 weeks ago it has been running on a juwel rio 180 with 2 ghost koi around 2-3inches 1 shubunkin around 5inches and a goldfish around 4inches. I have gone to clean the filter today to find its not atall dirty! Is this something to worry about as i expected it to be quite dirty. I have a fluval 105 running on my turtle tank and that is always really dirty after 2 weeks. Any advice would be great. Thanks

 

[Andyskoi]

Hi i bought a new tetratec ex700 external filter around 5 weeks ago it has been running on a juwel rio 180 with 2 ghost koi around 2-3inches 1 shubunkin around 5inches and a goldfish around 4inches. I have gone to clean the filter today to find its not atall dirty! Is this something to worry about as i expected it to be quite dirty. I have a fluval 105 running on my turtle tank and that is always really dirty after 2 weeks. Any advice would be great. Thanks