I used the replaceable blades for an olga knife. Very sharp! Just cuts the silicone off. 2-3 blades is all you will need. Then I used alcohol to clean the glass before putting on new silicone.

Smart man ;)

Stainless steel razor blades are the best, they don't scratch glass. (as easy)

Point of infomation
 

I spoke yesterday with the GE sealant people and asked them if they make any silicone that is aquarium safe. Their answer NO, all their stuff contains mold and mildew chemicals. So GE I or GE II that some of us used over the years is now included in the formula. :neutral:

Whoever you spoke with must not know about GE SCS1200.

Most of the aquarium builders use it.

Isn't that what you use to make oil?

sounds harsh lol

Yes (old school way)

I'm not trying to start anything, just passing along what I was told by GE and read in their information . :wink:
Aquarium builders should read these Data Sheets, unless I missed it I could not find anywhere where it states that GE-SCS 1200 is aquarium safe. The last point on page .02 under not recommended is a good clue that it shouldn't be used in continuous contact with or under water.
http://www.siliconeforbuilding.com/p...nstruction.pdf

Interesting.

From what I am reading it says "Contact Momentive technical services for applications where sealant is used underwater or in continuous contact with water."

The other widely used silicone for aquarium building is the Momentive RTV-100.