Spring trick has been used for years in tube bending. However the spring goes on the outside. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Zaer_2RNuY8.html
usta selamın aleyküm ben türkiyeden büyük bir hayranınım birşey sormak istiyorum benim atman-at 3338 dış filtrem var ses yapıyor diye pervanesini değiştirdim ama yinede ses var neden olabilir ne yapmam lazım şimdiden teşekkürler iyi çalışmalar
another great video... sir... may i ask? to suck the water... just open the valve or we need to put inside water into the pipe first? my thought it will be great for another waterflow idea of sump filter...
I pour the water in to pipe to make Siphon .You may check the video link to see what I do ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-XCgxBfGVbPw.html
But the pipe will not suction the water by itself. The video is incomplete until you show how you create the suction and how you pump the new water it back to aquarium...