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Thread: Nexus pipework

  1. #41
    Extreme Koi Member Rank = Nanasai Scamp's Avatar
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    Quote Originally Posted by andikoi View Post
    when i had old pond everything was 1 1/2" but new one is 4" from drums to pumps then 2" after that to shower,and ive noticed the difference in that extra 1/2", i considered going 3" from pumps but got told wouldnt make much difference,can you not change to 2" scamp,andi
    Hi Andi, yep could be done, but would be a massive hassle, and expense in new unions etc...plus the end return goes through pond wall and fibreglass in 1.5” so this would have to stay as is...so whether having 2” all through and then 30cm of 1.5” at the end would cancel out the benefits I don’t know?
    Annoying thing is when starting out (7yrs ago) I went to a koi dealer and he recommended 1.5” return...could easily have done it in 2” at the time..i’ll Make do and then when I eventually move do the next pond in 2”..cheers

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  3. #42
    Member Rank = Tosai Sim's Avatar
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    I have changed my pipe work.
    It now run 3" from filter to pump and over the shower, the flow is pretty impressive. When I turn the pump up you can watch the two filters that feed it drop in water level.
    All my fittings under water are still 1.5" I was thinking of changing to two inch and splitting it over two returns, do you think this is a good idea?

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  5. #43
    Senior Member Rank = Grand Champion andikoi's Avatar
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    the TCP is the antibacterial disinfectant pump made by dettol,lol,andi

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  7. #44
    Senior Member Rank = Grand Champion andikoi's Avatar
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    where did you get it from gray,andi

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  9. #45
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by andikoi View Post
    the TCP is the antibacterial disinfectant pump made by dettol,lol,andi
    Ah thatíll be it. Iím an 80ís kid so clearly was thinking TCP! God that stuff stings!!!!

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  11. #46
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by andikoi View Post
    where did you get it from gray,andi
    I looked around and then got it off Amazon from a place called Active Leisure. (?)

    Searched on Flea Bay and saw one for £149 and turned out to be the same people.

    Went with Amazon as it was 48hr free delivery and same price.

    Seems bloody cheap to me for a 20k pump so Iím keen to see it running.

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  13. #47
    Senior Member Rank = Rokusai Gray's Avatar
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    Nexus pipework

    Quote Originally Posted by Sim View Post
    I have changed my pipe work.
    It now run 3" from filter to pump and over the shower, the flow is pretty impressive. When I turn the pump up you can watch the two filters that feed it drop in water level.
    All my fittings under water are still 1.5" I was thinking of changing to two inch and splitting it over two returns, do you think this is a good idea?
    Iíve got my returns split into two using 2Ē on each and they flow nicely. Iíve also got ball valves on each return so I can adjust the flow to both.

    At the mo they are both fully open but Iíll close the higher up one a little in the spring to give more of a flow in the lower part of the pond where the sh*t collects more.

    On yours with 3Ē Iíd definitely split them to give you more flow control. Gives you the option then.
    Last edited by Gray; 09-01-2019 at 09:16 AM.

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  15. #48
    Member Rank = Tosai Sim's Avatar
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    Thanks gray
    Think I may do that with the 1.5, it's on a separate run that I use more in the winter through a heat exchanger.
    I don't really have any deep returns now I guess the deepest is about 2ft, i have slide valves on them at the moment do you reckon I should change them for ball valves ?
    The 3" just goes straight over the Bakki, I just turn the pump right down in the winter

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  17. #49
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by Sim View Post
    Thanks gray
    Think I may do that with the 1.5, it's on a separate run that I use more in the winter through a heat exchanger.
    I don't really have any deep returns now I guess the deepest is about 2ft, i have slide valves on them at the moment do you reckon I should change them for ball valves ?
    The 3" just goes straight over the Bakki, I just turn the pump right down in the winter
    If youíre going to change the 1.5Ē run(s) to 2Ē anyways itíd be worth changing the slide valves Iíd say as the advice I was given early last year by the guys on here was that ball valves are much more reliable than slides and easier to use to adjust the flows hence only having ball valves on my set up.

    Havenít had any leaks or issues with the ball valves to date.

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  19. #50
    Quote Originally Posted by Gray View Post
    Sorry Freddy, just noticed I didn't answer your questions and pointers from before!

    As you recommended before, I'll add the big fellas slowly. I've only got 6 total to add so maybe I'll do them in 2 goes at 3 per time a couple of weeks apart.

    I've got 125 litres of K1 in my 320 at the mo and it boils very nicely. Reckon I should add some more before the spring comes and the Koi turn up? I've got an EA 130 pumping air into it so it can cope with more K1 for sure.
    get as much as you can in there mate. like I say. I have 250 lts in there. and the same a ea 130 pump. and it boils it great. I put my last 25 lts in. in October so as to mature for spring time. and I am going to add another 50lts over the coming weeks. I bet you can t wait for spring mate. to get your big fish in there. they look great in the windows. and I am loving it this winter the cover on for the first time. temps keeping high enough for the fish to be swimming in the windows. and taking the odd feed. your doing it the right way mate. take care
    fred

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  21. #51
    Quote Originally Posted by andikoi View Post
    the TCP is the antibacterial disinfectant pump made by dettol,lol,andi
    haha belly laughing here.

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  23. #52
    Senior Member Rank = Grand Champion andikoi's Avatar
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    my returns are split after pump,but as pump inlets and outlets are 1 1/2" i used rubber reducers before and after 4"-1 1/2 before then 1"-2" after,but then split using 2" Y connectors then a 2" ball valves on each of those 4 lines,each pump then either sends over shower or underwater all using 2" including the inlets in pond,will wait to see if gray likes the jeboa before i buy a couple,i think they have 2" inlet/outlets so that should help the flow a bit,andi

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  25. #53
    Extreme Koi Member Rank = Nanasai Scamp's Avatar
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    Quote Originally Posted by freddyboy View Post
    get as much as you can in there mate. like I say. I have 250 lts in there. and the same a ea 130 pump. and it boils it great. I put my last 25 lts in. in October so as to mature for spring time. and I am going to add another 50lts over the coming weeks. I bet you can t wait for spring mate. to get your big fish in there. they look great in the windows. and I am loving it this winter the cover on for the first time. temps keeping high enough for the fish to be swimming in the windows. and taking the odd feed. your doing it the right way mate. take care
    fred
    I agree with Fred, I've got 300 litres of K1/Biochips in my 320, added progressively over time..

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  27. #54
    Senior Member Rank = Grand Champion andikoi's Avatar
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    since new pond build my nexus hasnt really been on properly due to needing to be lowered,wil be soon lol,but to keep bio active ive been keeping water from skimmer in it and every other day sending this into pond so it gets fresh in filter,now something i have found is that everytime i got to it,the centre of the easy is blocked with k1,this i have found out is due to water level not being high enough to keep k1 above the outlets from easy section to bio section,any of you noticed with the amounts you have in that when pump turned off say for cleaning you get k1 in centre part??,andi

  28. #55
    Quote Originally Posted by Scamp View Post
    I agree with Fred, I've got 300 litres of K1/Biochips in my 320, added progressively over time..
    I have heard they mature pretty quickly. the bio chips. I was told to add my filteration media slowly. over time. but now in hindsight . I wonder if I should have put it all in right from the start,
    who know s what is right or wrong. my last 100lts has been helx and my next lot will be helx. how s your draco drum running scamp. hope it is spot on. and the fish are well

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  30. #56
    Extreme Koi Member Rank = Nanasai Scamp's Avatar
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    Quote Originally Posted by freddyboy View Post
    I have heard they mature pretty quickly. the bio chips. I was told to add my filteration media slowly. over time. but now in hindsight . I wonder if I should have put it all in right from the start,
    who know s what is right or wrong. my last 100lts has been helx and my next lot will be helx. how s your draco drum running scamp. hope it is spot on. and the fish are well
    yep the media is a nice brown colour, and params all good so must be working..Draco's spot on Fred, since I jet washed it, its cleaning every 35 mins or so, just love a drum for taking the Nexus cleaning away! Fish and pond doing well Fred, all tucked up for Winter as cold here last night around zero. Hope you're keeping well too bud. Cheers

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  32. #57
    Quote Originally Posted by Scamp View Post
    yep the media is a nice brown colour, and params all good so must be working..Draco's spot on Fred, since I jet washed it, its cleaning every 35 mins or so, just love a drum for taking the Nexus cleaning away! Fish and pond doing well Fred, all tucked up for Winter as cold here last night around zero. Hope you're keeping well too bud. Cheers
    yeah mate I am fine. the draco was the best investment I have made pond wise. for cleaning time and all that. my last pond I had 2x easy pods and in pond pumps. two of them. and working away on the rigs when it was 3 on 3 off
    it was a nightmare to keep on top off it. that's another reason I bought the draco drum. my last year on the rig before retirement. meant there was no worries. we have had a couple of night around the zero mark. but its warmed up again. I was out with the dog earlier and it was mildish for this time of year. I jet was the drum screen once a year now. used to be 6 months. take care
    fred

  33. #58
    Extreme Koi Member Rank = Nanasai Scamp's Avatar
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    Quote Originally Posted by andikoi View Post
    since new pond build my nexus hasnt really been on properly due to needing to be lowered,wil be soon lol,but to keep bio active ive been keeping water from skimmer in it and every other day sending this into pond so it gets fresh in filter,now something i have found is that everytime i got to it,the centre of the easy is blocked with k1,this i have found out is due to water level not being high enough to keep k1 above the outlets from easy section to bio section,any of you noticed with the amounts you have in that when pump turned off say for cleaning you get k1 in centre part??,andi
    Hi sorry mate struggling to understand what u mean..do u mean K1 from the actual easy is finding itself in the centre pipe bit? You can get a plastic lid that should stop that..or do you mean k1 is coming from the bio section into the centre pipe of the easy through the very bottom slots? This should not happen if you are pumping air enough into your bio? How low is your water level in the bio section? Cheers

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  35. #59
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    Quote Originally Posted by freddyboy View Post
    yeah mate I am fine. the draco was the best investment I have made pond wise. for cleaning time and all that. my last pond I had 2x easy pods and in pond pumps. two of them. and working away on the rigs when it was 3 on 3 off
    it was a nightmare to keep on top off it. that's another reason I bought the draco drum. my last year on the rig before retirement. meant there was no worries. we have had a couple of night around the zero mark. but its warmed up again. I was out with the dog earlier and it was mildish for this time of year. I jet was the drum screen once a year now. used to be 6 months. take care
    fred
    Same mate I travel every week for my job, and it was way too stressful thinking of the Nexus cleaning when away, particularly in the summer...I think the Nexus is a good filter, just much much better with a drum in it..Nothing like an early morning walk with a dog..when I retire I plan to get 2...a black lab and Blue Staffie...something to look forward too! Cheers

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  37. #60
    Senior Member Rank = Grand Champion andikoi's Avatar
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    At the moment my water in nexus is about 1cm above inlet tray bit so very low.yes k1 is coming back from bio and into centre pipe bit through flow holes.andi

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