JNS sump series got 3 common sizes (450, 650, 750), and all the details (includes size) are customizable to fit your requirements.

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• High quality polished acrylic construction
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• Clear front panel with metric scale for easy monitoring
   

• opaque back panel to reduce algae growing
   

• Top lid cut-off for more flexible uses, and prevent dust and foreign.
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• Dosing tube holder included (Ø 5mm* 4)
   

• Probe holder (Ø 13mm* 2, Ø 17mm* 2)
   

• RO connector (Ø 6.2 mm) *1
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• An automatic filter roller could be added (sold separately)