Jragold, you are right. For some reason I thought what I saw was acrylic. I've posted his response to my inquiry. I'm not sure what the forum rules are on posting email addresses and phone numbers, but if you'd like to email him or call him, PM me and I'll provide you with his information.
Not sure which tank you were looking at, but to put in a center brace on a glass tank you'd have to use glass, not acrylic. Regular aquarium silicone sealant will bond glass to glass, but it won't hold acrylic very well at all. You can use silicone to temporarily bond acrylic dividers or baffles in a glass sump, but it has no great strength. To bond acrylic to acrylic you'd use Weldon #16 thickened glue or Weldon #3 solvent glue. You can only use #3 on very smooth perfectly straight surfaces. For a center brace on a glass tank you get a piece of glass cut almost exactly the inside width of the tank measured at the ends, and after you clean the glass with alcohol you run a bead of silicone on the inside just under the tank molding. Then you insert the crossbar and lever it up into position and prop it up in place (I usually use a couple of pieces of pvc
pipe to prop it) then put a long clamp on the top to tighten up the tank on the bar. Leave the clamp on for 24 hours. If you do it right the crossbar will hold as long as the rest of the tank seals.
Rich @ Boardroom Aquatics
----- Original Message -----
I'm a regular in your store and on my last visit I noticed you used a piece of acrylic sheet the width of the tank as a center brace. I'm a member on an aquatic fish Internet forum and someone is planning on doing the same thing, but he does not know what kind of silicone to use. Would you be kind enough to let me know what you used so I can relay that to him? Specifics would be great!
Thank you in advanced, kind sir.