Hey guys a local reefer told me to use number 4 then 16 i dont remember if that was right or if it was 3 and then 16. Here is the link to the site.
http://www.ipscorp.com/industrial/acrylics.html
I remember he told me to use a seringe to apply one off them in small amounts then use the other to put over that one.
Also do i need gloves or a mask it this stuff toxic to breath. I am planing to put in some baffels in my sump for my upcoming 180g this month thanks guys.