+1, GE used to say aquarium safe but took it off for previously mentioned liability issues (didn't want to pay for water damage if a pane fell off)

Must say 100% Silicone! With no additives.

There's two blue ones ;)

Make sure it's silicone 1 not 2 (also in a blue tube) as 2 has mildew guard in it.

GE I if I'm simply doing resealing. GE SCS1200 if I'm building or attaching glass to acrylic.

Lots say 100% silicone but still say mildew/mold resistant. That's the big thing to watch for, mold/mildew resistant also means that it's got chemicals in it to stop that.

+1 on GE Silicon 1, just did my tank/sump in that and works great. I have an acrylic sump that i used weld-on 4 then silicone. The silicone has not shown any water bubbles yet even, it probably could have sealed the acrylic itself... probably...

Lots of youtube video's on doing silicone jobs if you havn't before. Most say to use painters tape on the seems, i did, works great. If you havn't siliconed before like me use the wide tape... I'm still scraping bits off as i see it since i used the 1" tape and i'm sloppier than 1" apperently.

Well i picked up my glass today. FML. Measured it 1/4" to short. So I will be looking for:
A - something to space it out
B - Glob on the silicone
C - Pay $45 again for properly sized glass

But sounds like GE silicone 1 is the way to go. I will look for it when I go shopping

If it's only 1/4" too short, have them cut the matching panels to suit the short panels.

Are your baffles 1/4" short? So there's a 1/8" gap on each side? If it's less than 1/4" it should be fine to just fill it with silicone.

yep just 1/8 on each side. Decided just to goop it on with silicone.