If you have regular plate glass...it may not look as white as you may think especially when you add different light spectrums to it. Here’s one I did a while back.
Here is the starboard bottom of my new tank.
Leave room for the silicone bead on bottom panel. This is usually 1/2”-1” depending on manufacturer. Simply measure your bead and allow for 1/16” - 1/8” from bead. This will allow starboard to lay flush on glass. Flame polish starboard and install within 30 minutes after treatment. Apply silicone to glass instead of Starboad to keep from making a mess during installation. Avoid black silicone so that the squeeze out doesn’t get on your white Starboard. This will prevent hours of work. Don’t worry about detritus that will accumulate in the crack. Makes it very easy to suck out. Also, people that didn’t silicone found very little detritus under the board even after years of use.
Here is the starboard bottom of my new tank.
Leave room for the silicone bead on bottom panel. This is usually 1/2”-1” depending on manufacturer. Simply measure your bead and allow for 1/16” - 1/8” from bead. This will allow starboard to lay flush on glass. Flame polish starboard and install within 30 minutes after treatment. Apply silicone to glass instead of Starboad to keep from making a mess during installation. Avoid black silicone so that the squeeze out doesn’t get on your white Starboard. This will prevent hours of work. Don’t worry about detritus that will accumulate in the crack. Makes it very easy to suck out. Also, people that didn’t silicone found very little detritus under the board even after years of use.