Sump Chamber Material?

moz

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I'm thinking of trying to build a small (500x500x500) reef setup for as little as possible (less than R1000, excluding livestock), to try and convince some colleagues that reef keeping is not necessarily a rich persons hobby. I'd like to build a filter/Sump chamber into the back of the tank similar to those used in commercial nanos. My question is other than glass what would be the cheepest material to use to construct this chamber, ABS, HIPS, Acrylic, PVC? Any pros and cons on the different material will be appreciated?
 

dallasg

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glass is generally the cheapest, 6mm from builders is R199sqm
 

moz

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Glass would be the cheapest, but then the sump would be visible from inside the tank, I could always just stick on a piece of black PVC. While on the subject of glass 6mm all around?
 

dallasg

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6mm all round according to hennie's calc is ok, but u would need to double brace and cross brace, the bottom should be 10mm thick, but if u double brace and use a nice piece of wood and polystyrene should be ok
 

moz

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6mm all round according to hennie's calc is ok, but u would need to double brace and cross brace, the bottom should be 10mm thick, but if u double brace and use a nice piece of wood and polystyrene should be ok
Wouldn't 6mm sides be OK with out bracing?
What kind of paint could be used inside the tank, if I were to use glass as the back panel?
 

dallasg

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without bracing yip, then base needs to be atleast 8mm, but i have a 6mm base on my 4ft and all ok, just dont make the water level higher than 42cm :)

dont paint, use blue acrylic or perspex instead of glass, about R400 for that sixe though
 

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