Reef safe silicone

Discussion in 'General Discussion' started by dan_k, Aug 20, 2016.

  1. dan_k

    dan_k Well-Known Member NJRC Member

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    Can someone tell me what is the reef safe silicone.
    I think I remeber GE 1 does that work well will it hold baffles in a sump?
    Thanks
     
  2. Raffle King

    Raffle King Officer Emeritus Officer Emeritus NJRC Member

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    Thats it
     
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  3. Mark_C

    Mark_C Well-Known Member NJRC Member Moderator

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    I've built 2 sumps with GE 100%. Works well. Keep in mind that it bonds great to glass, not good to plexi. I use plexi baffles. If doing same I would advise a large bead on the glass, ensuring there is adequate amount of silicone on both sides of the plexi baffle to 'lock' it in place.
    FYI, my current glass/plexi sump has some complex baffles and has been running a year with no concerns. But, I used a trick (pat.pend. ;) ). I used a very small drill bit to drill a few holes in the plexi, 3 or 4 per side, around the sides and bottom of the baffle. Then, when I placed it in I made sure there was a thick bead of silicone on each side and made sure the silicone on each side met up through the holes in the plexi, effectively anchoring the baffle in place. Probably not necessary, just a thought.
    Have fun.
     
    Last edited: Aug 21, 2016
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  4. redfishbluefish

    redfishbluefish Officer Emeritus Officer Emeritus NJRC Member

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    Agree with @Mark_C , using a large bead of silicone if doing acrylic to glass. Don't think pretty, think function, and a thick bead will help hold that baffle.

    Also, let the silicone cure for as long as you can wait.....three day minimum for me.
     
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  5. dan_k

    dan_k Well-Known Member NJRC Member

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    Thanks for all the info guys appreciate it
     
  6. Jim

    Jim Member

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    Are there any good ways for securing new acrylic baffles to a sump that is already in action?
    I can't really imagine a multi-day shut down that would allow silicone to cure, so then have started contemplating the aquascape epoxy on my shelf and thinking hm
     
  7. myrjon

    myrjon Well-Known Member NJRC Member

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    A thought ...............1.5 or so pvc tubing cut to height of baffle one for each side.make baffle with snug to fit with tubing on each side...
     
  8. Jim

    Jim Member

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    you mean just create a lot of compression without a seal ?
     
  9. myrjon

    myrjon Well-Known Member NJRC Member

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  10. Jim

    Jim Member

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    I'm thinking similar but maybe using some soft tubing maybe even airline tube as a gasket of sorts. Not so sure how how silicone will bond with that but at leasts its an out of water experiment
     
  11. myrjon

    myrjon Well-Known Member NJRC Member

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    silicone + glass+ acrylic = no adhesion
     
  12. Mark_C

    Mark_C Well-Known Member NJRC Member Moderator

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    Was my exact initial thought. Slice the airline lengthwise, wrap around sides of the baffle, put in place.
     
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  13. Jim

    Jim Member

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    looks pretty good. removableness for cleaning is nice bonus too IMG_0339.jpg
     
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