Results 1 to 20 of 63
-
23-08-2020, 06:05 PM #1
Returns to pond - Is there a science to it
It is final planning stages for me for my new enlarged pond (which I hope to start before the end of the month (Mini digger timing), and what I am toing and throwing with at the moment is returns and their placement, my current plans include the following (quick overview)
- Internal pond dimensions 6500 L x 2500 W x 1600 D
- 2 aeriated bottom drains drains > 4" > Drako Solum 25 > 4" > Drako Large Bio > 2" > EA 20k pump > EA 110w UV > 2" returns x 2
- In wall Skimmer > 4" > Ultrasieve 3 > 2" > EA 20k pump > 2 Lines to a 1000mm Blade > Bypass to a Low Level 2" Return for winter
What my quwstion is, should I be creating a general flow as I have now in my natural'ish pond, suck water out one end, pump it back in the other - OR do I mix it up a bit with Returns at various places at various heights Etc.
My skimmer will be one end of my back wall, my blade in the middle of my back wall for visual reasons, so maybe all the returns at the other end ??
Cheers All
-
freddyboy Thanked / Liked this Post
-
24-08-2020, 06:51 AM #2
My pond is a round pond. And my mid returns. Are about 2 foot of the bottom of the pond. 6 foot deep. Underneath my wall skimmer. To ultra sieve 3. With a 15000lph pump. UV to mid returns. I used to run a 8000lph pump. But changed it to 15000lph
And found this a lot better for the circulation for fish and sieve.
Hope this helps
Fred
Sent from my SM-G960F using Tapatalk
-
dbs, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 07:29 AM #3
I have just completed the fibreglass stage (Derbyshire Dig) just slightly smaller than your proposed pond. I have put in 2x aerated bottom drains with 3 below water returns about 1foot off the bottom all pointing in an anti clockwise direction. Additionally there will be an above water level blade return on the same end wall as the skimmer. 0C22910B-616A-44A1-BBFD-D9C47F379DFF.jpg
The use of variflow pumps and tangential returns should keep the debris drifting towards the slightly sloping floor into the aerated bottom drains1kGal BD/Skim RDF/UV/k1 2.3kGal 2windows 2airBD/skim Sieve/Eazypod RDFcombi+bakki 3xVP/UV,ASHP
-
-
24-08-2020, 09:13 AM #4
Sorry for the off topic question but does the EA varipump take 2" pressure pipe or the smaller 2" waste pipe?
-
24-08-2020, 09:26 AM #5
The Jebao vari pump which I believe is the same pump, will allow you to use waste pipe or pressure pipe if you use female union connections off the pump.
These are much better than any connections provided as they offer no restriction from the pump to your chosen pipe.
-
-
24-08-2020, 02:17 PM #6
-
Mannh85, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 10:00 PM #7
-
freddyboy, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 10:06 PM #8
Ahhh thank you Mike yes very similar indeed I have read yours over the weeks... ideally i need to go back through loads to read the bits I need to again, but I think I would be on here all.day hahaha ha... so let me get this correct, all your returns are low other than the blade ??
Glad to hear you also have skimmer and blade on same wall... with my OCD it has me mixed up a tad having planned mine out on paper I can't do it symmetrical how ever hard I try
i was wondering if i should have separate heights or a pointing the same way, or even just random directions to mix things upLast edited by dbs; 24-08-2020 at 10:08 PM.
-
freddyboy, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 10:11 PM #9
-
-
24-08-2020, 10:21 PM #10
There are three returns lower then the windows so as not to send turbulence into the window shelves. Wall 1(narrowest end wall with window)has no returns but the (Looking clockwise) side wall 2 (Without a window) has a tangental return pointing towards end wall 1. End wall 3 has a return (bottom left corner) pointing directly up along parallel with the wall 2 & the skimmer in the top right corner. The sidewall 4 has a return again pointing parallel to wall 3 therefore creating hopefully an anti clockwise flow with the additional snooker style bounce around the slightly narrower end around the bottom drain. With the floor slightly sloping towards each drain & both BDs aerated hopefully this will create almost a “ number 8 type flow around the pond..........well that’s my theory but the laws of nature may prove different.
1kGal BD/Skim RDF/UV/k1 2.3kGal 2windows 2airBD/skim Sieve/Eazypod RDFcombi+bakki 3xVP/UV,ASHP
-
freddyboy, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 10:21 PM #11
-
freddyboy, Frimley Koi keeper Thanked / Liked this Post
-
24-08-2020, 10:49 PM #12
-
-
25-08-2020, 05:54 AM #13
Hi mate. Mid returns . I have one pointing
Clockwise and one pointing anti clockwise.
And run one only at a time. I switch the direction of return. Once a week. The only draw back
Is if you forget and leave one to long. With out switching for flow. You can have a dead leg. Which could build up bad bacteria. So I have to remember to alter and switch the flow lol
Fred
Sent from my SM-G960F using Tapatalk
-
dbs, Frimley Koi keeper Thanked / Liked this Post
-
25-08-2020, 01:33 PM #14
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
25-08-2020, 01:37 PM #15
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
25-08-2020, 02:33 PM #16
i have had mine on for 5 years last pump and this new one lol thats inside the filter room out of the sun.
as in the pressure i have had my ea 30000lph vario. on full flow for about 10 minutes to test them. i run the pump all the time at 12000lph.
and as dan said great for if you are changing pumps and pipe work.
-
dbs, Frimley Koi keeper Thanked / Liked this Post
-
25-08-2020, 02:37 PM #17
-
dbs, Frimley Koi keeper Thanked / Liked this Post
-
25-08-2020, 06:02 PM #18
-
Frimley Koi keeper, freddyboy Thanked / Liked this Post
-
25-08-2020, 08:24 PM #19
If it's a gravity system which I'm sure it is, then the UV needs to be after the sieve and the pump but if it's a pump fed system then the UV has to be after the pump but before the sieve.
-
25-08-2020, 08:25 PM #20
The Daily pond temp thread
Pond still covered, currently 11.6C Been really mild this year as far as pond temps go. ...