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Changing gravel "on the fly"
OK. So it must be a straight hose, not a gravel cleaner type.
Thanks "chet" chet-at-surewestDOTnet wrote in message ... "Frank Mamone" wrote in message . .. What type of hose would produce enough suction to suck out the gravel? Surely not gravel cleaner? Thanks, Frank Depends on how high off the floor you have your aquarium. I would guess that a hose of approximately 1" in diameter, with a 5 gallon bucket resting on the floor would provide plenty of siphon power to vacuum out a considerable amount of gravel. A 1" inside diameter siphon hose about 4.5 vertical feet in length would have a water column weight close to 1/2 pound. This translates into about 1/2 pound of lift at the bottom of your tank. It would be the gravellest sucking siphon you've ever seen. Smaller or larger hose diameters would have a proportional ability to pull (less weight, but smaller area). It is not the diameter, but the vertical drop from the tank that makes the difference. I would guess that a smaller diameter hose might be easier to control than a larger one. chet |
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