| Dick, if I had mounted the slide valve correctly (meaning upside down) you can open it a little to see how much water is inside (Holding a pressure or not). To me this is unimportant, as long as it is giving an even flow of water over the media.
But the slide valve, or other means of access is important, so that if/when the need comes, there is access to run a large bottle brush or similar up through the pipe to clean any blockage of the holes.
When I made the spray tube, I did not make enough rows of holes and found the water 'jetted' out too fast, so I drilled two extra rows of holes and all is fine and even.
Lee, that sounds a top idea. If I am pleased with the showers long term, I plan on fitting many sets on my indoor 2,500 galoon pond and linking up with the big outdoor pond. Pump up from outdoors, through the showers and gravity returning through 4" pipes back to the main pond.
Maurice. |