New Perspex Sump

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by Barend, 1 Dec 2013.

  1. Barend

    Barend

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    So my man cave frame is done.

    Now for the furniture. Starting with a sump I thought I would post the fist steps.

    To quite sure what it would look like when it is done but here are the first components that I made this weekend.

    WP_20131201_001 (Small).jpg

    Sump

    WP_20131201_004 (Small).jpg

    receiving chamber for the DT water. first part of the filter sock chamber.


    WP_20131201_002 (Small).jpg

    It will all make sense when I put them together.
    Hope to give update of pictures as and when I make them. http://www.marineaquariumsa.com/images/smilies/smile2.gif

    WP_20131201_001 (Small).jpg

    WP_20131201_004 (Small).jpg

    WP_20131201_002 (Small).jpg
     
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  3. butcherman

    butcherman Moderator MASA Contributor

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    is it all Perspex? very nice indeed!
     
  4. dallasg

    dallasg Moderator MASA Contributor

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    looking great!
     
  5. CPT reefman

    CPT reefman

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    Is the material you used perspex or polycarbonate or acrylic or something else. If its perspex you going to have a huge mess in a few months time.
     
  6. dallasg

    dallasg Moderator MASA Contributor

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    why? thousands of USA reefers use perspex and no issues....

    perspex is acrylic
     
  7. CPT reefman

    CPT reefman

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    Perspex is the crapest of translucent sheet material available. It has a HTD of next to nothing meaning it cant even handle warm water for long periods of time. It flexural modulas is bad something like less than 5% elongation before failure when under load meaning is extremely brittle. Compared to polycarb which is close to 100%

    Most often people call all clear plastic sheet ( laymens terms ) material perspex regardless of what it really is simply because its a name known to most. Same as any forklift is called a hyster regardless of wether its a toyota or any other brand.

    Perspex has a use as a cheap signage material and thats about it. Far to often it gets used for structural applications where it sould never be used.
     
    Last edited by a moderator: 1 Dec 2013
  8. CPT reefman

    CPT reefman

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    Sorry thats HDT not HTD
     
  9. CPT reefman

    CPT reefman

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    Also most perspex available in SA has a huge % of re-grind making its performance even worse.
     
  10. Istio

    Istio

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    Nah boet, Perspex is a brand of acrylic ( also Plexiglass, Lucite ect). It is a modified (poly) methylmethacrylate and is proven very suitable for aquarium applications.
     
  11. Brad Cottle

    Brad Cottle

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    Where did you get the sheets:thumbup:
     
  12. CPT reefman

    CPT reefman

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    What ever floats your boat, Im only speaking from experiance here no one has to listen. But I kinda know what Im talking about, use it or dont.

    Maybe someone can go to a sheet plastics supplier and ask for a small sample of each and while there play with them like bend drop and twist. And post your findings here.

    Again use it or dont, doesnt change my life in any way
     
  13. 2balive

    2balive

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    I have used 10mm diameter Perspex rods to support my LR, they maintained integrity for over a year with no issues, when is took the structure apart they were in the same condition as when I put it in.

    Was planning to use fiberglass rods, but no one was stocking it.
     
  14. Nemos Janitor

    Nemos Janitor

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    Last edited: 2 Dec 2013
  15. Barend

    Barend Thread Starter

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    WOW! thank you for the comments guys. I got the sheets from a friend for free 8 mm it had no cover on with a name. @CPT reefman I have sent a mail to ask what material it is and I know it is cast and not extruded. The please tubes are from Maysey's.

    What test can I do to see if it would last or not?
     
    Last edited by a moderator: 26 Nov 2015
  16. Barend

    Barend Thread Starter

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    It is Acrylic
     
  17. CPT reefman

    CPT reefman

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    No issue with the tube, this material is acceptable when in a closed tube format and can only be extruded as such. This is why it can be used for skimmers.
     
  18. CPT reefman

    CPT reefman

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    as a sump and at 8mm I would say it could last for a between 1-2 years at the most if its cheapish extruded material with worst case scenario % of regrind. Initially I thought it was in the region of 5-6mm.

    When I was allot younger I built many of my aquarium parts from perspex as I was a student. It was only years later when my profession led me to a project which saw rigid plastics being used with thermoplastics ( my area of expertise ) and I then learnt a big and realized why all of my perspex unit fell apart and or cracked after a very short time in use.
     
  19. Rossreefer

    Rossreefer

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    Really like these perspex sumps you see in the US.
     
  20. Barend

    Barend Thread Starter

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    Hi guys just an update on my Acrylic sump.

    During the week I tested the sump for leaks and it was great no leaks.


    The only draw back of this is that the sides bowed. Well it will not be this full when in use but had to test for leaks properly. View attachment 15562

    Now I have completed the other pieces and they are silicon ed in place. WP_20131208_003 (Small).jpg

    The thin brace in the middle works well.

    WP_20131208_003 (Small).jpg
     
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