Bog filter for plants.


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Hello. I am new to ponds I recently bought a wooden raised pond (175 gallons) I haven’t set up yet , I am really sold on the idea of a bog filter , but I have no idea or time to make one . I know this is a custom project but I don’t have the tools or the exposure to the parts needed to build one . Is there anyway someone can build it for me (I think a 20 gallon container will do just fine) and I will get the pump, I will pay for the labor and shipping . I’m sorry if this sounds dumb I Just wanted to see if it was a possibility. I Just the pvc plumbing part done and just basically have to box ready to install . Let me know if anyone is up to the task . Thank you in advance :)
 
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Mmathis

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Hello and welcome!

Where do you live? Maybe you could put out some feelers in your area, to see if there are any handy people who could help you. Maybe there is a koi/goldfish/garden club near you — you could ask them for help.
 

addy1

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Welcome to the forum.

It could be done and shipped, shipping would be a hit, size and weight. Where you live would help.
 
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You may be making this harder than you think - you can create a bog filter out of a any sturdy container. A planter box, a sturdy tote, etc. A few easy to obtain plumbing parts and you'd be in business.

However, another idea would be to buy a small waterfall filter and use the bog at your bog filter. It's already plumbed and ready to go. Just fill it with stone and plant the top and voila! Bog filter! Not recommending this brand in particular, but the first one that came up in my search:


I've seen lots of ponds where the existing biofalls was converted to bog filtration. You just need to keep an eye on root growth so you don't end up overflowing it - but that's true of any bog, really.

I'm rather surprised the pond industry hasn't hopped on the "add a bog" bandwagon and created a simple bog filter you could buy... maybe a business idea for someone!
 

j.w

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1629392157814.gif
@Yady23
 
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j.w

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This makes me wonder if I couldn't make this stainless steel water fall canister into a bog filter?
I will go and start my own thread on this. I know it would not be big enough to keep my whole pond clean but it could be a help maybe?

IMG_4095.JPG


@Yady23 I think you could do this bog thing yourself w/all the help from people here who have done one!
 
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Could the above filter work as a bog? Get the media out of plant something ? The dimensions are 20x17x14. Does anyone know if those come ready to install with the in and out connection ?
 
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100% yes. The in is the hose connection and the out is the waterfall.
Another question sorry I am a newbie :( this waterfall is rated at 1800 gph. My pond is 171 gallons. Is that too much power ? Would it be ok ?
 
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At 171 gallons a pump would need to be basically 1000 gph in order to even look like a waterfall your pond will be a bit turbulent but not too bad the filter your looking at has to be comparable to the size of your pond
 

Laaf

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Using a bio falls as a bog would work. But it could be a too small surface area?

I am going to make my second bog out of a black plastic bin from tractor supply, and plumbing and sprinkler PVC from Lowes. My first one I cut pvc and glued it. This time I found parts that screw together and will use some plumber's tape to seal it. I have to see if I can make a Y off my existing pump or add a new pump. Since it is just for my bog, it can be a relatively small pump, should be under 50$. My bin/new bog is 2 feet by 3 feet. My first one I made a hole through the bin. This one I am just running the water line over the top since it will be hidden with plants soon enough.

It is my project for tomorrow, hopefully not all day, but you never know. I will post pics when I am done including parts. Last time I did not take pics or I would just post those.

Ideally, the bog is overflowing with cascading plants so it can be uglyish until it is covered.
 
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But it could be a too small surface area?

On a big pond, yes. For a pond that's under 200 gallons, it would be well-suited to the task. A biofalls essentially is a bog without the plants. Most have filter pads or bioballs to add to the biological filtration. A few plants in the top will only increase the value of the filter as those plants take up nutrients before the water returns to the pond.

Again, a small bog filter will need more tending than a large one. Plants grow AMAZINGINGLY fast in a bog environment, so you need to watch to make sure you aren't overwhelming the filter and redirecting water out of the biofalls. A small bog works best with small plants. I'd use things like water hyacinths, water cress, or impatiens - things that die back in the fall and are easily thinned out, and don't develop huge root systems that will make it difficult to remove them when the time comes. No irises or rushes for example.
 
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Sorry dimensions are: 24x25x24. My only thing would be how to position it on top of the raised pond . This is a pic of my pond :
 

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addy1

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Across a corner. Water willow makes a great stay small bog plant and easy to pull
1.JPG
 
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Does anyone know if the flow on these falls are controllable , I just read this one in particular is 4200gph. I wanted this one because of the bigger size for planting: it’s called the Melody waterfall filter . I’m afraid it will pull the water too fast .
 
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With good reason your pond is less then 400 gallons by the looks of it and thats circulating the water x 10 in an hour thats a lot. but it can be controlled if you work at it ball valves and difusers push the water into a pipe whith multiple holes and difuse the water but i would look more around 1 to 2 thoughsand
 

Laaf

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Here are all of my screw together sprinkler supply/plumbing pipes. I just need to drill holes and put it together. It is a puzzle you can put together at your hardware store with whatever they have in stock. My mom and I spent an hour in the aisle putting parts together to make it work. I had to put it together to "see" if it worked. My brain couldn't just grab the parts to assemble later . This will be my third, and each is a little different depending on what is in stock or how I make all of the bends work. I made mine with capped openings at the ends so they can open to flush out clogs.

I will put it all together, basically as I have it laid out, then I will put the pipe assembly in the bin, cover with gravel.

I need to add an outflow pipe or cut an opening from the bin back to the pond.

Then attach a pump to the bog piping with flexible tubing. I need one more 6 inch riser so the connection to the pipe tubing is above the gravel.

I put the pump in a plastic mesh plant basket in the pond, filled with pea gravel as an added protection to help keep it from clogging.

This is only 3/4 inch piping. My first one I used larger pipes. But I wanted to just use the screw together and not mess with the PVC glue this time. For a small pond, it should be sufficient.

I consider these to be "as long as they last" solutions. They are small enough that it should not be too hard to make a new one if the bin cracks. I am adding a second bog to my small pond because.......fish. I have added more and I want to be sure there is enough of a filtration system to keep their water clean for them.

I can send more pics along the process. I am still unsure on the outflow back to the pond. It will depend on what I can find at the store today. I am pretty good with bailing wire and duct tape lol.
 

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Laaf

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I think you all are talking about pumps WAY too strong for a 175 gallon plus 20 ish gallon bog. I would think a 150 - 300 gph pump would be perfectly adequate to circulate water through the bog every hour.

This is the type of basket I put the pump in surrounded by pea gravel so it takes longer before it clogs with leaves and gunk. SOmeone on this site posted that tip.


And this is probably the pumps I would get today for an under 300 gallon pond. I know nothing about the brand, it just happens to be what the closest home improvement store has in stock.

Here is a 330 gph pump for 60$ that comes with an extra aeration spray if you want to add it.


And here is a similar sized pump that comes with it's own prefilter basket for 100$ I do have one of these baskets on my waterfall pump. This could be instead of the pea gravel basket I mentioned above. An advantage to this box is that if the bog was overflowing, the pump can not pull lower than this box so there would be enough water to keep fish alive if bog sprung a leak or overflowed.


A similar sized pump is available without the aeration spray or filter box for about 40$. This may be the one I get today for my new bog.



Now that I see your pond pic, I might use a simple "window box" type planter diagonal on one of your corners, with one or 2 rows of bog piping. I would cut a little overflow area so it waterfalled back into your pond.
 
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