I'm constructing a wet/dry filter and I was curious if the GE brand Window and Door Sealent is safe to use. It says that it is "mildew resistant, water tight, wil not shrink or yellow, perminantly flexiable, withstands the most extreme conditions, low oder, and 100% Silicone 2." I was planning on using this to glue acrylic to acrylic, and pvc to pvc. I'd appriciate any input that anyone has to offer. Thanks. -Adam