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Thread: Nexus pipework

  1. #21
    I've recently bought a Jebao 20k variable from the new TSP range. £150.

    The TSP range is advertised for either dry or submerged mounting and whilst everyone runs the DCTs dry mounted anyway, the DCTs warranty is void if running them dry mounted as they are only supposed to be submerged.

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  3. #22
    Quote Originally Posted by Gray View Post
    Iíve got a Jebao variable 7k on my sieve line at the mo and it works well - low wattage and quiet too. Might look at a 20k Jebao for the main line and then drop it down a bit if the flow is a bit mad.

    Not sure the Sequence is pulling enough. Seems a bit on the low side when I look at the inlet flow on the Nexus. Itís ok but not quite the rush of water Iíd expect.

    That said, itís filtering the crap out well even though the water is still a bit green... Nexus pipework Resolve has been ordered.

    My concern is for when the big fellas turn up in spring and they start eating & sh*tting...will the Sequence struggle. Time will tel.
    When you get the big fellas in there.
    And they start to up the sh_te load.
    You will notice it. Like we talked about once before. Add them slowly. If you can mate. Plus a lot more cleaning. But your set up is not bad. Even better with a draco in there. In my nexus 320. I have 250 lts of media in there k1 and helx
    I am going to add another 50 liters
    And take it to 300lts.
    How much media you got in your nexus.

    Sent from my SM-G925F using Tapatalk

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  5. #23
    Senior Member Rank = Grand Champion andikoi's Avatar
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  7. #24
    cheap them andi when you compare them to my first 2x aqua pond pumps and around 400 pounds a piece. very cheap. good pumps

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  9. #25
    Senior Member Rank = Rokusai Skoosh88's Avatar
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    Iím running 2 x the 10k ones of these and havenít had an issue with them, tidy little pumps


    Sent from my iPhone using Tapatalk

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  11. #26
    Extreme Koi Member Rank = Adult Champion pip895's Avatar
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    I had one badged up as a PondExpert variflow the 30,000 one. Great pump but I had the feeling it was working hard at above about 80% power - not rough sounding just a bit louder and you didn't seem to get as much extra flow for the power in as when under 80%. Its a good idea to get one a size up from what you need so you can run it turned down a bit - I suspect you will save running costs and extend the life of the pump. Don't go too high though - the 30,000 still produced a lot of flow even on its lowest setting.

    I directly compared it to a blue eco 240 - the blue eco won but not by much of a margin and if I hadn't been able to pick up the Blue Eco second hand and really cheep I would have been sticking with the Variflow/Jebao for sure.
    6000g unheated in ground koi pond
    +3000g lily/Anoxic pond attached
    28 koi (40 to 65cm)
    Bottom drain & 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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  13. #27
    Quote Originally Posted by pip895 View Post
    I had one badged up as a PondExpert variflow the 30,000 one. Great pump but I had the feeling it was working hard at above about 80% power - not rough sounding just a bit louder and you didn't seem to get as much extra flow for the power in as when under 80%. Its a good idea to get one a size up from what you need so you can run it turned down a bit - I suspect you will save running costs and extend the life of the pump. Don't go too high though - the 30,000 still produced a lot of flow even on its lowest setting.
    .
    Exactly my thought process. 12k per hour is plenty for me and at that flow the 20k variable uses half the power of a dedicated 12k pump.

    If you want to flow at 18k then maybe the 30k variable is the better option as it will pay for itself over time through the energy savings, yet still have plenty of oomph to turn up on the day you want to empty your pond in a hurry.



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    Last edited by RS2OOO; 08-01-2019 at 10:39 AM.

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  15. #28
    Extreme Koi Member Rank = Nanasai Scamp's Avatar
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    Hi Scotty/all
    sorry to jump on this thread, but Interesting to read about flow rates, + manufacturers ratings at zero head and reality in a Koi pond. For example my set up is:
    4" BD > Nexus 320 with Draco Drum>Blue Eco>6kw Elecro (backup)>>Invertor Heatpump>2 x UV's>Pond. All returns in 1.5" pipes (doh!)

    You can see that I got bitten by the bug, and added much more over last years to the set up then when I started! Thats a hell of lot of stuff for the water to flow through, despite swept bends.

    If I was to do again of course some of the gear would be added to skimmer/Pod line. Anyhow I have a Blue Eco 500w variable on it with a max 42000 LPH with zero head and no restrictions etc etc....sounds super powerful ehh!?

    So I have it set at 320watt which should be 27000 LPH mathematically with zero head etc. - Reality measured through the installed electronic water flow meter just before entering the pond is 8900 LPH! How cr@p is that! Even on full belt I'd only get 13900lph! My set up is clearly too restricted, but be wary of estimating actual flow, as you may be really surprised by the reality, even in a better designed / simpler set up!

    However the flow seems to be ok for my Nexus/draco as Ammonia and Nitrate reading are always around 0.01/0.02 mg/l (measured on palintester), but I have Nitrate always of around 40mg/l.. I also have the pod on the skimmer line which helps....
    Cheers

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  17. #29
    Senior Member Rank = Grand Champion andikoi's Avatar
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    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

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  19. #30
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by andikoi View Post
    That's the exact one I have open in another tab on Amazon! Looks great for that money. It's the wattage that gets me super interested. My Sequence is a great bit of kit but the running cost is a killer. My pond is on a separate electricity feed so I can see exactly what it costs...wish I couldn't!

    So is the TCP better than the DCT range? Can't seem to figure it out. I am guessing TCP.

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  21. #31
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by RS2OOO View Post
    Exactly my thought process. 12k per hour is plenty for me and at that flow the 20k variable uses half the power of a dedicated 12k pump.

    If you want to flow at 18k then maybe the 30k variable is the better option as it will pay for itself over time through the energy savings, yet still have plenty of oomph to turn up on the day you want to empty your pond in a hurry.
    What level of watts (approx) are being consumed at the 12k/hr level out of interest? Cheers.

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  23. #32
    Senior Member Rank = Grand Champion andikoi's Avatar
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    dct is original old model,TSP is new model, dct only went upto 18k i think,andi

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  25. #33
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by andikoi View Post
    dct is original old model,TCP is new model, dct only went upto 18k i think,andi
    Cheers Andi, appreciated.

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  27. #34
    Senior Member Rank = Grand Champion andikoi's Avatar
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    apparrently the tsp20000 goes from 9k-20k and at 9kph it runs at 34w and 20k its 187w,,my old dct runs at 100w at 12k which is its max,andi

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  29. #35

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  31. #36
    I believe they are the same pump, jebao themselves say that a lot of premium brand pump and filter equipment is rebranded Jebao.

    I have a chart somewhere that shows performance Vs head height for the TSP.

    Forum member Markini, if he's around could tell you the exact wattage Vs flow speed as he was experimenting with the 20k TSP.... It's obviously variable depending on individual factors such as pipe diameter and lengths etc. Inlets and outlets are 2" but I run through 1.5" returns so mine is strangled a bit.

    Sent from my Pixel 2 using Tapatalk

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  33. #37
    Senior Member Rank = Rokusai Gray's Avatar
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    I've just picked up a TCP 20,000 so will see how this fairs when I fit it. Hopefully I'll get some time this weekend to get it running.

    I love the build quality and the reliability of the Sequence pumps I've got but they are seriously thirsty fellas. Hoping the TCP brings the running cost down a wee bit!

    I'll report back.

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  35. #38
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by freddyboy View Post
    When you get the big fellas in there.
    And they start to up the sh_te load.
    You will notice it. Like we talked about once before. Add them slowly. If you can mate. Plus a lot more cleaning. But your set up is not bad. Even better with a draco in there. In my nexus 320. I have 250 lts of media in there k1 and helx
    I am going to add another 50 liters
    And take it to 300lts.
    How much media you got in your nexus.

    Sent from my SM-G925F using Tapatalk
    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.

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  37. #39
    Quote Originally Posted by Gray View Post
    I've just picked up a TCP 20,000 so will see how this fairs when I fit it. Hopefully I'll get some time this weekend to get it running.

    I love the build quality and the reliability of the Sequence pumps I've got but they are seriously thirsty fellas. Hoping the TCP brings the running cost down a wee bit!

    I'll report back.

    TCP ??

    or

    TSP ??

    I'm getting confused lol.

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  39. #40
    Senior Member Rank = Rokusai Gray's Avatar
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    Quote Originally Posted by RS2OOO View Post
    TCP ??

    or

    TSP ??

    I'm getting confused lol.
    Clearly am too!!! ...I hope I have not bought a dodgy knock off one...

    Defo TSP - just checked my order to make sure :-)

 

 
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