Saw this tonight and thought it was pretty cool. I wonder if you could get the same effect or similar by just cutting a slit in the PVC lengthwise instead of drilling it and inserting the 1" diameter pipes.
DIY filter waterfall outlets
- Thread starter koiguy1969
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There are so many ways to create an even flow at the top of a waterfall. easiest is to simply have the supply line pointing down into a dep area and as the water fills up it will over flow evenly across what ever area you have. the other thing this build could have done was to simply have the 4" pvc have a few cuts like we do with the peastone bogs but horizontally instead of across the pipe.
While I've been looking at filtering waterfalls I've noticed they're all rated for a certain GPH. What makes the limitations on that? I can see where certain diameters of hose can only allow so much water through per minute but that seems like the limiting factor would then be the hose, not the waterfall filter. Is it the type and thickness of the plastic, meaning that the plastic would crack under the force a higher GPH? Or the height of the bucket between the hose and the weir can only hold so much? These are just my guesses. Does Anyone know for sure?
Unless you want a second waterfall for beauty or to have a second stream of water from a different direction to push stuff toward your intake bay or skimmer.
wait untill you see what energy is need in monthly costs before you go splitting streams. If i remember correctly you were thinking like 4000 gph. That is just enough for one waterfall or enough for two trickles
SEVERAL FACTORS
1, If you push water through a filter too fast your not allowing enough time for the filter to do its job.
2. not so much the plastic failing as much as it is the hose is too small as you stated as well . if increased it can overwhelm the opening of the weir and overflow. there is no pressure to the biofalls only the soils backfilled around them.
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Hi GBBUDD, this is exactly my concern. I will be building a bog and the water that trickles down will essentially be the waterfall/stream that leads into the pond, but I wanted to see if I could add multiple waterfalls from different areas...kind of like yours. Your pond has multiple areas where water falls from, but granted you have a much bigger pond and have several bogs. Is the rule of thumb one waterfall/water outlet per bog?
Not at all if you wanted to spend the time you could make as many as you wanted literally. Waterfalls are restricted by three factors. Not enough water flow to have a viable falls.
And the width too wide and it's hardly a waterfall it's more a trickle and too narrow and it is a hard flow that can do some damage depending on where it is landing.
Not having enough height all my falls are a step down from the last.
The bottom of my lowest waterfall is a good 7 feet lower than the top of the highest waterfall. They are all by gravity from basicly one pump. With the exception of the cistern.
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Okay, awesome! thank you for the advice. So, this may be a silly question (I guess I'm trying to understand the logistics behind it) but how do I make it so that the waterfall water is also being filtered by the bog? I think I'm assuming the waterfalls will be in the exterior of the pond... but now that I'm writing this, I think I've got it backwards and the waterfalls should be created within the pond...using the same water, right?
The bog is separate from the pond. A pump in the pond sends pond water to the bottom of the bog which has a void space for solids to fall to the bog bottom to be consumed by nitrifying bacteria. as the water rises past the void space, it hits rock and gravel of varying sizes which helps filter it more. After it rises above the rocks, it flows (via a waterfall) back into the pond. Typically the upflow bog and the pond share a wall but the two are separate. The top of the bog is above the top of the pond so that when the water goes back into the pond, it falls (thus, your waterfall) which gives it opportunity to have some oxygen mixed back into the water. Plus it looks nice.
Does that help?
Does that help?
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Hi ! yes, this definitely helps me understand the purpose of the bog and the mechanics behind it. so for the additional waterfalls that are in the pond, how do I make sure that that water is also being filtered through the bog? Like, how do you create different outlets within the pond so that there are multiple waterfalls? because isn't it just one hose that is connected to the pump and wraps around the pond and all the way to the top of the bog? I hope this makes sense.
You could install a T-fitting in the hose so one outlet goes to the bottom of the bog and one goes to wherever else you want your waterfall, but the waterfall water wouldn't be filtered by the bog. What would work better is to build the top of your bog so that the water escapes from it in more than one place - kind of like building a rock wall to hold the water back and then make holes in the top of the wall where you want your waterfalls.
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I took the line from my pump in the pond to a 3 way splitter and ran lines to the spillway, one to the bog and one to the lotus tub. I like that they're all adjustable so I can change the flow to each. Like yesterday after I stirred up the clay in the pot of lilies. Under the spillway I have a piece of tubing that helps to distribute the bog overflow which you can see under the copper. I extended the spillway with a sheet of copper.
Each situation is different but this concoction works for me.
Each situation is different but this concoction works for me.