Quote:
Originally Posted by hummer
Thanks for the picture. I'll try drilling the holes tonight and see how that works. This would also become useful when the power goes out.
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Drill them at a downward angle (about 20 degrees from the pipe is good) 1 cm above your usual water line - this will minimize the amount of bubbles generated as well as minimize the backflow.
Also, constantly turning off your powerheads and return pumps will shorten their lives - I leave everthing on, and the fish chase after it.