hello all pond people


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i just acquired a plastic pre moulded pond its approx 6ft long 3 ft wide 3 ft deep, dug a hole and filled it with water
where did i go wrong?
 
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Welcome! We are looking forward to hearing your plans for your new pond.
 
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View attachment 119460@doobry What ya gonna put in there? Plants and fish? A pump and filter would help keep it clean.
its says 500 0n the base is that litres? so how many gallons is it?,also what type of pond pump and filter would you recommend
to suit thisit will house about 12 goldfish and plants which i will need help with
how do i fit the pond to be level with surround or do i put it below the surround
any kind of help would be appreciated
thanks
 
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About 132 gallons. Are you going to have fish?
hopefully a dozen gold fish or so living in a as comfortable environment as possible with clear clean water
 
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I am confused about the volume of your pond. 6 feet long x 3 feet wide and 3 feet deep should be roughly 400 gallons assuming the entire depth is 3 feet and the pond is a perfect rectangle. But you mention it says 500 on the base. Given the dimensions 6x3x3 it is doubtful your pond is 500 liters (132 gallons) unless....the depth and width are not exactly 3 feet. Does the pond have a plant shelf around the perimeter and get shallow at one end?
 
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its a basin with shelves the deep part is about 2ft by 1ft and staggers out and up the sides(if that makes any sense) maybe that would explain the approx dim s i said
sorry i never said and thanks for the reply
 
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i drained it today and tried to get a few buckles out and couldnt, it distorted over night the side wall( if i can call it that) caved in wards so this time i propped it with a stick to stop it and low and behold when it was ful it buckled in again ?argh can somebody help
its a starter 500 preformed pond
 

addy1

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Is the dirt level below the pond? No holes no gaps. They say to line the hole with sand so it sits level and firm.
 
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Is the dirt level below the pond? No holes no gaps. They say to line the hole with sand so it sits level and firm.
no the dirt level is above the pond and i tried packing as much into the air space between the liner and ground
i drained it again today and reset it, and refilled, i have to live with it i suppose ??
 
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From what I've read on this site and personal deduction, those preform ponds seem quite difficult to get just right. If it ends up not level, the water will be high on one side and the other side will have the plastic exposed.
I think you would have to do several dry runs to get it at least good. Sand would be my choice too. Get the soil on the bottom as near perfect level and depth. If the soil is loose, I would pound it down as much as possible. Then add sand to fine tune it. If the sides are below the ground, soil and other debris will get washed into the pond. I would install it with the sides a little higher and build the soil up to it. A slight mount or upgrade so nothing washes into it. The pond will probably settle a bit anyway with all the weight of the water.
I think the bottom being level and correct depth is more important than filling in the sides. Once it's set, you can start filling in the sides.
 

addy1

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I had two preforms, after a few winters they shifted, then after one real cold winter one of them cracked. That summer I yanked them dug a bit deeper, removed the shelves made them a tiny bit wider, there was not much room for wider, and put in liner.

The blue line is the 300 gallon stock tank lotus tub, the two red lines are the two ex- preforms, both preforms were around 200 some gallons, 6 feet or so in length, that I yanked and put in liners. The black line to the right is the 1000 gallon stock tank. Even the stock tanks sank a bit after winters. And I put them on rock dust which hardens up nicely.
The bottom pond is partly hidden in this picture. They are on a built up flat spot that I built as part of the big pond and bog. The far side of the ponds is a built up 4 foot wall, with just enough room to get my mower through between them and the fence.
Capture.JPG
 
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well its nearly time for the hardware i was told to get a lugana pump and a green geenie filter with uvc for the pond
  • 4w UVC built into lid to prevent green water.
  • Recomended for goldfish ponds up to 2000 Litres (440 gallons).
  • Inlet 20-25mm,Outlet 1 x 32mm
  • Dimensions: 38 x 27 x 30 (cm LWH)
  • The Green Genie 2000 is a popular box filter for smaller ponds.
Laguna Max Flo 4000

  • Max Flow: 4000 litres / 879 gallons
  • Flow @ 0.6m: 3000 litres / 670 gallons
  • Flow @ 1.22m: 1750 litres / 385 gallons
  • Flow @ 1.83m: 360 litres / 79 gallons
  • Wattage: 55 watts
  • Auxiliary Outlet Size: 20mm (3/4'), 25mm (1'), 32mm (1 1/4').

and in another shop i was told get a pressurized filter with uvc
Pontec 5000 PondoPress Set


which type do you recommend for a starter 500 pond
 
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Uv is a matter of preference. It kills any algae in the pond, but doesn’t remove it, which leaves it in the water for other algae to eat. It treats the side effects, not the cause, which is excess nutrients in the water. Plants and not over feeding the fish is the way to prevent that.
You want a pump that will move your water volume 1 1/2 - 2 times per hour. So if your pond is 2000 ltrs, you want one that is 6000-8000 ltrs pr hour flow. I personally won’t bother with a uv filter, the algae is food for the fish and things the fish will eat, naturally removes excess nutrients, and protection from sight based predators. My pond last summer got pea soup green, and I had a population increase. Which wasn’t bad for me, as I had plenty of space for all my fish, but it fed daphnia which the fry eat, leading to more survivors.
 
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thanks for the reply JB .so its a 500 ltr starter pond so i would need a pump to move 2000 ltrs an hr
so are pressurized filters generally better /worse for this size pond? and whats the difference between them
 
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You’d need 750-1000. 500x1.5= 750. Going up more than that would make a very strong current. Too much for most fish and plants. I’d say go for 1000, or around that, but find one with adjustable flow that you can increase or decrease as needed. Pressure filters are in a sealed/ locked canister, and use pressure to force water through the media, so if you get even a pin prick or hairline crack, it will shoot out and end up not working. I don’t have any experience with those, I stick with just a pump and diy filters.
 
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My recommendation would be to get a filter that is fed by a pump from below a filter media you can change. For example, the pump pulls water from the pond, sends it in the bottom of the filter, where it goes through the media, then spills out the top. That’s my preference. There are also filters that come before the pump, which with it being a pond, is not a bad idea, at least some kind of pre filter to prevent clogs in the filter. In that case, the filter is in the water, water is pulled by the pump through the media, where it goes in the inlet of the pump all clean and comes out the other side, ready for something to make spilling back into the pond nice. With just a pump, you can set it up either way. Read through the articles about filters, YouTube diy pond filters, and find one that will work for you. I prefer a filter with media I can adjust as needed. Polyester quilt batting does great at removing algae, but needs frequent rinses or changing if there’s a lot of algae. Lava rock makes great biological filtration, lots of surface area for bacteria to set up. So once my new pond is set up, I’ll be doing a prefilter with the quilt batting, then sending the water to my bog for biological filtrating.
 

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