My friend has a sweetwater linear in his pond and it is the same size and depth as mine. He has it right by the pond so he is running the tubing about 75 ft. It seems to be working really well. How do you know if it is putting enough O2 in the water? He has a swath of about a 25 ft diameter of bubbles in the middle of his pond coming from a 9 in diffuser
Is this enough oxygen?
