New Pond build-Finally Got Some Fish In!

Moderators: B.Scott, vippymini, Gazza, Manky Sanke

User avatar
Bob Hart
Site Admin
Site Admin
Posts: 2292
Joined: Sun Aug 14, 2005 8:53 am
Location: Maidstone, Kent, England
Contact:

Post by Bob Hart »

emmaandaj wrote:Hi Bob,
For some reason i was under the impression that a nexus 300 had a max flow of 10000 litres an hour-ive just checked and its 13000 litres so i could probably use a aquamax 16000 allowing for head loss.
Even if it was 10000, you wouldnt get 10000 pumping up to a shower, the head loss would reduce the output to a lot less. I dont know what output an Eco16000 would do pumping to a shower, but I'm pretty sure that's what Darren at A4Koi uses on his showers.
emmaandaj wrote: So looks like i can use aquamax 1600eco's all round. The only reason i suggested only putting one of the skimmers was so that i could use skimmer (B) to create a flow along the curved wall (1). Do you think it would work with all three returns across the shower as it would only give me one return? I know Gazza suggested a return pushing along the curved wall?
I think you should move the single drain further away from the shower, so it's not just in the middle. The output from the shower (circa 4000 gallons) will create quite a flow and 'may' push some debris away from the drain. I'd put it 2/3rds the way down the pond. Does the shower have to be in the corner of your garden, just put it in the middle and it will push towards the drain.
emmaandaj wrote: Do you mean to have the shower returning via a weir rather than piped below the surface? I was worried that a wier would create a flow than fans out across the pond, rather than pushing along the right hand wall?
I've only ever seen one piped return and that's at Darrens. I'm sure there are others somewhere though. The shower weir is nearly 1-metre across and with circa 4000 gallons coming off the weir there will be quite a flow.
emmaandaj wrote: Just been looking at Yumekoi's website-really interesting read about the showers. If im not mistaken people are using showers as the only filtration and still achieving good clarity??? Seems BHM is clever stuff!
Andy :D
Ring Mike up and have a chat with him, dont send him an email, he's a bit forgetful with emails and may not reply.
I wouldnt say clarity is 'good' on a shower only pond, but the Koi wouldnt worry about it. Removing solids by one means or another definity helps with clarity. Many people just pump direct though and the shower principle and BHM sure works well and eats all th poo.
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Bob,

Ive just looked up the aquamax 1600 head loss, at 1metre it is 13200litres an hour- a shower will be slightly higher so would be just under the maximum flow for a Nexus :D

I see what you are saying about the shower at one end pushing down the pond. I was planning a trip to yumekoi and koi uk at some point-may be worth bringing it forward in order to have a good chat with Mike @ yumekoi :D

Do you think it would be worth putting some static k1 in front of the shower to help with fines?

Cheers Andy
User avatar
Bob Hart
Site Admin
Site Admin
Posts: 2292
Joined: Sun Aug 14, 2005 8:53 am
Location: Maidstone, Kent, England
Contact:

Post by Bob Hart »

emmaandaj wrote:Hi Bob,
Do you think it would be worth putting some static k1 in front of the shower to help with fines?
Cheers Andy
ou have static on the nexus, so no need there. Want you going to have home made Easy's on each of the skimmer lines? If so no other need for any static K1.
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Bob,

I cant seem to find any info on line about the head loss of aquamax pumps above 1 metre-the info i need is on the back of the box!

Do you think my last idea would work if i could achieve 3000gph over the shower using just the return from the nexus and one skimmer. Then allowing me to use the kast skimmer to push round the curved face of the pond?

Il try and get some info on head losses tommorrow. I take it you calculate head loss from the height of the pump to the top of the shower and not from the surface of the pond to the height of the shower? How high would a 4tier shower stand? Each tier is 30cm high i believe so about 1.2metres?

Cheers Andy

:D
User avatar
Bob Hart
Site Admin
Site Admin
Posts: 2292
Joined: Sun Aug 14, 2005 8:53 am
Location: Maidstone, Kent, England
Contact:

Post by Bob Hart »

Andy,

3000 gallons is the minimum you should put over a single shower, so that will work OK.

The delivery head is the height of the water level in the pond to the shower. This is because the height of the water coming 'into' the pump creates a suction head, which is taken off of the 'total head' the pump is pumping to. Hope that makes sense?
User avatar
StuW
Bull Shark
Bull Shark
Posts: 646
Joined: Fri Sep 09, 2005 7:42 pm
Location: North Essex

Post by StuW »

Andy to be honest Aquamax are great pumps for most things but are not great where head or pressure is concerned, it may be worth looking at sequence pumps to maximise output through the shower and still relatively cheap to run, all except the koi king range.
Great thread, I like
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Bob,

Ok so the head height is from the water level to the shower. So a four tier shower will be 1.2metres so if i allow 1.5metres for the height of the wall above the water level. Will have a search for some pumps :D

Hi Stu,

Aren't sequence pumps really noisy?

Cheers Andy
User avatar
StuW
Bull Shark
Bull Shark
Posts: 646
Joined: Fri Sep 09, 2005 7:42 pm
Location: North Essex

Post by StuW »

some people have had a few noise issues but if properly damped and fixed down they are not too bad, especially if placed in a dedicated filter house which should block out any noise.
User avatar
eds
Great White Shark
Great White Shark
Posts: 850
Joined: Sun Sep 09, 2007 11:59 am
Location: Nottingham, UK

Post by eds »

I've got two in my filter and I find them very quiet! They're the smaller models and pretty economical too. They pump water along a 25m pipe return and do a great job!
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Guys,

Ok got the info back on the aquamax 1600 (courtesy of Amanda :D ) I will have a head of 1.5metres roughly, the 1600 will provide 12,000 lph which i make out to be 2666 gph, i dont expect that they will actually be that good but with an aquamax 16000 on the skimmer and the nexus going on the shower i should exceed 3000 gph. Sound feasible???

Ive knocked up some drawings for a shower and will hopefully get started over the weekend. Im still not sure about a weir though, im worried about the shower being a bit noisy, the chilling effect and also that it will disturb the surface and restrict visibilty-i will have an aireated bottom drain for aireation but will have a switch by the pond to switch off the air. Any thoughtws greatly appreatiated!


Cheers Andy
User avatar
Gazza
architeuthis moderator
architeuthis moderator
Posts: 5306
Joined: Sat Aug 13, 2005 7:24 pm
Location: Essex,UK
Contact:

Post by Gazza »

Hi Andy,

So hows it going mate have you made any progress with the new pond :?:
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Gazza,

What have i been up to? DIGGING!

Firstly need to say a big thanks to Stu and Amanda for helping to dig out the final bit of the hole. The hole is now a few inches shy of 4ft deep. Was a bit sticky to start with as it had filed with water again-took a few hours to pump out! Still needs levelling out as it varies by a few inches in places. The pond base will be levelled next weekend along with the trench for the bottom drain.

At the moment there is about 200 bags of soil in the back garden and hole and around 300 bags in the front garden. i will be moving the bags out of the hole when my back recovers to allow for the base to be levelled. Then hopefully over the next few weekends i will get rid of the bags of soil!

Ive got the ballast sitting in the front garden ready for the base to be laid, hopefully in about two weekends time. The bottom drain and 4 inch pipe arrive this morning and should be fitted next weekend!

The last few weekends have been spent finishing the paths around the house to allow access by wheel barrow ready to start moving the soil and to get the building materials in!

Ive attached some pics

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od011.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od010.jpg[/img]

IMG]http://i14.photobucket.com/albums/a340/emma ... d009-1.jpg[/IMG]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od009.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od008.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od007.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od002.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od001.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emmaandaaj/od.jpg[/img]

Cheers Andy
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi,

Heres a few pics of hat it looked like before i dug up all the paths to repair a land drain and run a waste pipe, water pipe and elctric cable to the pond.

Cheers Andy

[img]http://i14.photobucket.com/albums/a340/emma ... ent024.jpg[/img]

[img]http://i14.photobucket.com/albums/a340/emma ... ent022.jpg[/img]
User avatar
Gazza
architeuthis moderator
architeuthis moderator
Posts: 5306
Joined: Sat Aug 13, 2005 7:24 pm
Location: Essex,UK
Contact:

Post by Gazza »

Well you have been a busy boy along with some help :D

It sounds like you have it all under control and looking forward to see it coming out of the ground as now you have all the bits i am sure there is no stopping you :D
emmaandaj
Bull Shark
Bull Shark
Posts: 527
Joined: Sun Jul 16, 2006 5:26 pm
Location: Colchester Essex

Post by emmaandaj »

Hi Gazza,

Never thought it would be this much hard work! Hopefully once the soil is gone i should start to see some progress!

Ive got most bits for the filtration etc, ive been picking up bit and pieces as i go-this way i can use any spare cash on the build!

Also got a new idea with regards to returns etc-will post a pic when i get a minute. Am i right in thinking you have two returns to your pond?


Andy :D
Post Reply