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aeration
"Newbie Bill" wrote in message
m... I have a small 200 gph pump (very low power usage) submerged in my pond for additional aeration - just as added 'insurance'. The output is below the water so the water is just 'bubbling' like a natural spring might. I do not want it splashing for several reasons. I have been told it is the breaking of the surface which helps to oxidize the water. Questions: 1) Is this actually doing me some good. 2)Aesthetics aside would an airstone attached be significantly better. Thanxx Bill Brister - Austin, Texas Try making a venturi out of pvc. This will give you the circulation benefit of the pump with more aeration than an airstone. You can also make it for a couple of bucks, so it's cheap to try. Basically, your pump output goes into a piece of horizontal 1/2" pvc a couple of feet long. Cut the pvc in half and add a T with the opening pointing straight up. Get another piece of pvc long enough to fit in the T and stick a couple inches out of the water. Cut one end at a 45 degree angle and shave the pvc so it will fit past the stop in the T. It needs to get down into the T and get into the flow coming from the pump, with the open angle away from the pump. The water flow sucks air in from the upright pvc and bubbles out of the lower pipe. Here's a possibly better explanation, with a different method. With a small pump, I'd stick with 1/2" pvc and shaving the pvc may be easier than finding tubing that will fit inside the 1/2" pvc. http://spaghoops.com/pond/venturi.htm I'm also in Austin btw. My fish love playing in the bubbles, although I've got a 1600 gph pump on the venturi which gives them a pretty good current to play in. |
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