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Thread: Pond Extension Advice Please
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22-11-2018, 12:13 AM #21
It wouldn't be in a sheltered spot pip.
I could insulate it but the more I think about it the garage has advantage of being lower risk of theft, it wont freeze, easy access to electrics for pump etc and the fish will be safe from cats/foxes etc.
Downsides are my pride and joy will have to be parked outside (which I hate doing as it attracts the wrong attention), and the temperature will be around 6 degrees higher. I could leave garage doors open (they lead to back garden) during the day when I'm at home to try and bring temps down a little before transferring Koi back to the pond.
Would a 6 degree temp drop managed over the course of 2 days be ok do you reckon?
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freddyboy Thanked / Liked this Post
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22-11-2018, 10:52 PM #22
Where as its not ideal, a healthy koi will be fine - If I look back through the seneye data I have a few occasions where that sort of drop has occurred naturally in my pond, and smaller ponds must be even more prone. You might get a little sulking for a day or two from a few of the fish.
6000g in ground koi pond
+3000g lily/Anoxic pond attached
29 koi (40 to 65cm)
Bottom drain, Mid water & Skimmer to Drum
JBR boichamber->Blue eco 500 pump ->below surface return.
Blue Eco 240 -> Large MB -> Waterfall -> Planted Anoxic pond (25 baskets)
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RS2OOO Thanked / Liked this Post
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22-11-2018, 11:52 PM #23
Really appreciate your advice Pip, many thanks.
Whether in the garage or on the patio, there are pros and cons with each, so the weather will probably be the deciding factor.
She's demanding a window now..... As much as I'd like one I'm doubtful I'll fit one, mainly cost but also adds more potential for leaks.
First quote on a 1mm EPDM Box Welded Liner has come in at £372 delivered which is better than I expected. Still waiting on another quote.
Pond temp only 5C today, but the Koi seem really lively. Watched them back on CCTV for the day at 50x speed and bloody hell do they cover some distance! Temps expected to go up from tomorrow to 10C so will cover them Sunday afternoon to try and keep that temp for as long as possible.
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23-11-2018, 01:40 AM #24
I would boot the car out and put the fish in the garage. They would be safer there and your inanimate object does not require keeping indoors
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23-11-2018, 01:39 PM #25
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lee63 Thanked / Liked this Post
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25-11-2018, 05:58 PM #26
Been out moving trees/shrubs and a tiny bit of digging today.
Some good news, well its good in theory but means more work.
I can go slightly larger than first thought so should be able to achieve 12,000 litres (approx. 2600 gallons).
Being on a water meter that will be plenty big enough and the Nexus should still cope if I keep stocks low (EA rate it for 18,000 litres).
Currently have 10 Koi, might buy another after the extension, but want to keep room for a 12th Koi just in case an amazing one pops up when you least expect it!
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25-11-2018, 08:15 PM #27
Hi
When it comes round to moving back the fish into the outside pond I would be wary of exposing them to a substantial temp drop. A 6C drop from say 12C inside is real high risk in my book - you are at temps where the fish have a pretty ineffective immune system. With a little planning you can maybe cool them inside for a week or two before moving to try and balance the temps or alternately borrow a heater to short term get the temps in the pond to match that of the holding tank and then run it down in a controlled manner. Its a pain and involves cost but reduces risk.
Shout if you need to borrow a heater for a couple of weeks.
Dave
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RS2OOO Thanked / Liked this Post
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25-11-2018, 08:33 PM #28
Think you got a bargain with the pool RS looks a good one,i would put them in the garage as its easier for you and the koi and come the spring,i have done it and a coupe of deg difference is ok if done gradually ie floating the bag.
John
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25-11-2018, 09:33 PM #29
Yes John the more I think about it the more I agree, I think Garage would be the best place.
I will need to make a cheap filter adding mature media as garage is too far away from the Nexus to redirect the flow from that.
Thanks for the offer Dave, that is very kind of you. I will try and do the work during a mild spell if I can get that time off work, but very handy to know help is available if the weather suddenly changes mid way through the extension.
It will take at least 2 weekends (when I'm not working) to get the prep work done, the collar will be quite big due to sloping garden and mixing cement by hand so realistically I don't think I can get it completed before Christmas, then January will likely be too cold, so I might have to put it off till a mild spell in Feb.
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26-11-2018, 09:57 AM #30
- Join Date
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Pond Extension Advice Please
I hear you there mate and if your forum name is anything to go by then i understand completely
alot of people have no idea, more so if its not in their other interests
car fan here obviously lol
Anyways, im late to this party but go big or go homeas they say ha ha
Hope it all goes well and as quickly and smoothly as can be. That quote for the box weld seems very reasonable too
Sent from my iPhone using TapatalkIts always a work in progress
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02-12-2018, 05:27 PM #31
Extension prep work commenced.
Everything required has been ordered except for sealant and a box filter for the temporary pool
Is there anyone local to North Kent / SE London who can lend an unused box filter or pressure filter that will fit in a car?
I was doing research on sealant and found that MS Polymer sealant will practically bond EPDM to EPDM, making a stronger bond than EPDM to plastic (bottom drain) so I'll now do as John originally suggested by cutting the old liner around the drain and sealing the new one on top.
Started the shuttering work ready for the concrete collar - I had no idea how much the garden sloped so the collar at the new end is likely to be almost a foot high. I've ordered 1 metre lengths of 16mm rebar which I'll stick in the ground before pouring concrete. (Can't think of any easier solutions).
I'll do a build thread once things properly get going but here's half a day's work completed, which included removing a large shrub and small tree:
IMG_20181202_154843.jpg
I'll get the inner frame of the shuttering done tomorrow if its dry.Last edited by RS2OOO; 02-12-2018 at 06:20 PM.
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lee63 Thanked / Liked this Post
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02-12-2018, 09:27 PM #32
Looking good mate.will be a nice size when done.pity your not closer as ive got an old bioforce 9000 sat in garden you could of used.and a few 5ftx4ft sheets of 10mm polycarb you could of had for cover.andi
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26-02-2019, 09:48 PM #33
Just came back to this thread to remind myself of some of the great hints, tips and advice you guys gave.
The extension is in progress this week, and will be 2600 gallons / 12,000 litres less a few gallons as I wont fill it right up to the brim.
Regarding Davej's point about affecting structural integrity, I extended the concrete collar (10-12" thick) to the new size which left the collar in a kind of 8 shape, then used a concrete cutting disc to cut out the middle section of collar.
There was conflicting advice regarding how to re-seal the new liner against the bottom drain, but having removed the old liner it was 100% attached to the extent that it actually looks like part of the bottom drain, so I'm opting for Johns suggestion having cut the old liner around the bottom drain and will be using MS290 to seal the new EPDM liner to the old one. Same with the pond inlets.
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Ajm Thanked / Liked this Post
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06-01-2025, 04:42 PM #34
What happened to this build?
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06-01-2025, 06:01 PM #35
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john1 Thanked / Liked this Post
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08-01-2025, 08:20 AM #36
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RS2OOO Thanked / Liked this Post
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08-01-2025, 12:39 PM #37
Have now found the build thread:
https://www.koiforum.uk/pond-constru...extension.html
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