aquapod24
New member
Hi I purchased a tunze osmolator for a 150 gallon tank almost a year ago. Worked great! It was simply connected to my sump which was the same level. Well I sold the 150 gallon tank but kept the tunze purchase a red sea Maxx 250. Set up the ATO and it tries to pump the water up but it's not the same level. It's about 4ft high. Is the pump not strong enough to push the water that high? Any other options?