Seal for pipe at top of Waterfall


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Hello,
I'm redesigning my small waterfall after losing water. I thought the issue was further down the waterfall, but turns out it must have been a leak at the top where the pipe came out of the slate. I had originally used sealant around the hole thinking that would do the trick.

I'm getting rid of the slate and just using pond liner at the top but need a secure fixing for the tube to come through to create the small pool at the top.

I have done a bit research and found the "Oase Redux" looks like what I need but they are 30 to 50 quid. I'm sure there will be cheaper versions/options out there but I dont know what I am looking for.

Can anybody help?

Thanks
 
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I don't know what an Oase Redux is. I'm thinking it might be some type of weir.
If it is, there are many things you can use as a weir. Any plastic box can be used. Those plastic bins that are used to hold screws, hardware, etc. work good.

You don't neccesarily need a weir. You can just have your pipe/hose spill out into the waterfall. You can cover it with rocks, plants, etc.

You can heat the end of a PVC pipe, then flatten it out to get a better affect.
Or use a short piece of PVC pipe perpendicular to the falls with holes drilled in it for a showing effect.

If you go with a homemade weir...
As far as a watertight connection for your feed pipe to any weir or waterfall box, a bulkhead fitting is the only choice. They are inexpensive and will give you a leak proof connection without using any messy inadequate sealant.
 
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I don't know what an Oase Redux is. I'm thinking it might be some type of weir.
If it is, there are many things you can use as a weir. Any plastic box can be used. Those plastic bins that are used to hold screws, hardware, etc. work good.

You don't neccesarily need a weir. You can just have your pipe/hose spill out into the waterfall. You can cover it with rocks, plants, etc.

You can heat the end of a PVC pipe, then flatten it out to get a better affect.
Or use a short piece of PVC pipe perpendicular to the falls with holes drilled in it for a showing effect.

If you go with a homemade weir...
As far as a watertight connection for your feed pipe to any weir or waterfall box, a bulkhead fitting is the only choice. They are inexpensive and will give you a leak proof connection without using any messy inadequate sealant.
Thanks, I'm not having a box, the pipe is coming through the ground and liner to create a little pool at top of waterfall Direct from my in pond pump. My problem is that I need the hole I make in the liner sealed around the pipe. Can you use bulk heads without a box just to seal a hole in the liner? I have seen bulk heads on my search and they are cheaper. I have 1 inch diameter flexible pipe. Would I need to buy a specific bulk head for that pipe?
 
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brokensword

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Thanks, I'm not having a box, the pipe is coming through the ground and liner to create a little pool at top of waterfall Direct from my in pond pump. My problem is that I need the hole I make in the liner sealed around the pipe. Can you use bulk heads without a box just to seal a hole in the liner? I have seen bulk heads on my search and they are cheaper. I have 1 inch diameter flexible pipe. Would I need to buy a specific bulk head for that pipe?
I would think a bulkhead fitting would work just fine as there's a rubber washer that goes on the water side anyway. And your liner, be it hdrpe or epdm (which is rubber, too). That said, for my waterfall, I routed my flex pvc up the sides of my rock pile (then I covered it) and let it lay on top, connected it to my homemade weir, and then placed more flat slate/rock on top of that to hide it. And because I have liner under it all, even if it leaks, the water goes back to the pond. I'd suggest also that you have a valve on the pipe to your water fall as it's nice to be able to adjust just how much flow you want.
 
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Thanks all, I've bought my 25 mm bulkhead fitting for 8 pound. I might even buy a cheap, small plastic bowl to see whether I like it as a weir. The more I think about it, the more I want to see what it looks like. Pics of my old slate waterfall and work in progress attached
 

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