Leaks / Gasket Issues
Please watch this video to see how to properly install the Shadow onto your aquarium to prevent leaks.

Gaskets Leaking

  • Check that the bulkhead nuts are securely tightened. DO NOT Overtighten with any tools or wrenches. The gaskets were designed to be sealed with hand force only and may leak if overtightened.
  • Check the holes in the aquarium:
    • Are they the correct size (63-65mm)? We recommend 63mm for the best seal.
    • Is there and scalloping or chips in the holes of the class/acrylic?
  • Is the glass or acrylic clean where the gaskets need to seal?
    • Is there paint or other material on the aquarium surface? Remove any paint or debris from the area.
    • Clean with Isopropyl Alcohol and reseat the gaskets.
  • Are the gaskets aligned correctly.
    • The gaskets need to be centered over the holes in the tank to seal properly. If they are not centered they can get pulled into the hole when tightening the bulkhead causing small drips or leaks.
    • Watch the video "Installation onto an aquarium" for proper alignment of the gaskets.
  • Is the plumbing secured? Make sure that the Rear Box PVC pipes are secured to the aquarium stand and not just hanging below the box. This will cause the overflow to not seal properly on the gaskets. The pipes when full of water will be very heavy and will pull down on the rear box causing the gaskets to unseal.
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