Dap Aquarium Sealant

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Dap Aquarium Sealant

88% Recommend this to a friend (7 of 8)

SKU: 203051
In Stock: 56
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Quick Overview

DAP Aquarium Sealant is 100% Silicone and aquarium safe. Use it to repair seals, add baffles to sumps or secure suction cups.

  • 2.8 fl oz

  • Clear


Full Details

DAP Aquarium Sealant is 100% Silicone and aquarium safe. Use it to repair seals, add baffles to sumps or secure suction cups.

2.8 fl oz


8 Items

  • Difficult to Squeeze Tube By John on 6/23/2017

    For small jobs, this would probably work great. But, installing baffles on a sump was a nightmare. Too difficult to squeeze the tube with enough pressure to get a good bead rolling along the seam cleanly! If you don't care what your seams look like, then this would work by stopping mid-bead and re-pushing silicone up the tube to squeeze out again! It was a nightmare...thank goodness I also purchased a tube of the silicone to use with a caulking gun...now that was quick, easy, and way cleaner look!
  • good product but why $3 mark up? By Benjamin on 1/5/2017

    The stuff works as it should. I don't like that BRS charges $3 more compared to my local big box hardware store.
  • Fixed my leak and is holds great By James on 2/21/2016

    I was an idiot in drilling my tank, but this stuff holds great and seals very quickly. Only complaint is that i ruptured the tube by squeezing too hard apparently.
  • Great Quality By Cody on 4/26/2015

    Used this on a custom plumbing mod on my refugium, worked like a charm. Dries faster than expected, strongly recommend using on dry surfaces as the instructions indicate.
  • easy, convenient safe By Ivan on 8/26/2014

    this is a great product to throw in your order and save a trip to the store. its fish safe, great nozzle for fine work.
  • Good Value By Chris on 2/17/2012

    I like the smaller tubes like this as you don't have to worry about it all hardening up. Would advise if you are building a tank though to get a larger amount as this could become much more expensive to use on real big jobs
  • Holds Strong By Daniel on 11/12/2011

    I used this silicone to put baffles in my sump. I haven't had one leak and only had to use one tube for all four baffles that were each approximately 12"x8".
  • Negative By Weird on 7/1/2011

    Why would you mark it up $2
    This supposed to be wholesale at least prices ... good product


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Product Questions

I'm wanting to install an overflow in an established aquarium. I can drain the water below the level where the overflow will be. How long before I can fill the tank back up without the possibility of chemical leaching and damaging the silicone seal.
Question by: Caleb on Apr 17, 2016 10:12:00 AM
Great question!
It would be quite risky to attempt on a full system. The silicone should set within 48 hours for the curing process. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 20, 2016 6:35:00 PM
Whats the difference between this sealant and your adhesive 10 ounce? Which would be better for adding baffles to my sump and attaching a overflow box?
Question by: Nick on Jan 1, 2017 12:11:00 PM
Great question! Either type of silicone will work just fine for your applications. I personally like the black silicone and used it for my frag tank's overflow box and I also touched up some sump baffles. :-)
Answer by: Randy (Admin) on Jan 10, 2017 2:05:00 PM