sealant for acrylic?-I made this! - Page 2-3reef Forums

reef_guru · 01-27-2008, 09:12 PM

you can goto home depot and get the 1/4 inch acrylic. when you make the sump make sure to dry fit it first. use duct tape or some other strong tape to hold it together, i use the blue painting tape. sand the edges so they are not rough without rolling the edge, keep it square. use a very fine grit, like drywall 220 grit on a flat board. any hole or any misguided edge will make havoc later on. if you need any help PM me.

flounder · 01-27-2008, 10:26 PM

I bought the sealant "EXTREME REPAIR", made by LEPAGE from Home Depot. It claims that it is "Aquarium safe" and works on "wood, rubber, glass, many metals & plastics" Do you think it will work for the job?

reef_guru · 01-27-2008, 10:32 PM

nope, weld-on 16 and nothing else.

flounder · 01-31-2008, 11:14 AM

FYI, I tried lepage's extreme repair and it did not, despite its claims, work on arcylic very well.

flounder · 02-01-2008, 03:53 PM

so I went out and bought some WELD-ON #16, 6 bucks for a small tube. It says that it "contains chemicals known to the state of California to cause cancer" Well it is -40 (C) out, I would prefer to stay inside, but my workshop is not well ventilated. Should I be concerned about cancer or some other problem due to "vapours"?

reef_guru · 02-02-2008, 12:29 AM

ventilation is the key, whatever you do, dont do it in your house. the lower temps will cause it get even thicker which may help. i crack the garage door when working with weld-on. i buy it by the gallon for $ 50

flounder · 02-02-2008, 08:04 PM

WOW weld-on is amazing! It bonded the arcylic perfectly on my DIY overflow box (next comes the sump) no leaks on the first attempt! I can't imagine what you would need multiple gallons of this stuff for (reef guru you must be an arcylic machine!), IME only a small amount is necessary to create a super strong bond. Are you guys sure this stuff is aquarium safe (with the cancer warnings and all)?

TY all 4 the tip!

reef_guru · 02-02-2008, 10:52 PM

once the cement cures its reef safe. i wouldnt pour it out of the container in the tank cuz youll give your fish cancer

DiamondBitsUSA · 02-04-2008, 07:52 PM

The reason it is so bad is it acts as a solvent weld and not just a glue. It has some filler but most of the work is done by the solvent.