thank you for the feedback,i have a 140 gallon with 2 Eheim,2260 and 2078,waterchange 70% a week with some seacem watertreatment,also use poly filter sometimes,feeding shrimps from the Barentsea and vitalis sticks,now and then live eartworms.Also cattappaleaves every 14.day.13pieces,taking out the old ones when changing water.That was the recept for my atabapo.sp.2 before i sold them,had them for 5 years,never disease in the tank,so have now atabapo red pike in the tank as you can se in my tread.