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| View Poll Results: U tube VS CPR | |||
| U-tube |
   
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3 | 42.86% |
| CPR style |
  
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4 | 57.14% |
| Voters: 7. You may not vote on this poll | |||
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#3
03-18-2005, 10:34 PM
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I found the U tube type grew alot of algae in them, coraline algae as well. You'll end up with bubbles all the time at the top of the U which will slow down your water significantly so like Danny said, put an airline in the top and run that to a power head (like where the bubble tube add on would go. That will draw water/air out of the U tube and keep your tube from developing bubbles.
Doug 
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