new tank

[Funky_Fish14]

Good quality clear silicone should stay clear. Algae will often cause it to turn green though, especially on older silicones. If you are going trimless with starphire glass then I'd probably go with clear. It looks smoking nice. Black silicon looks really 'stealthy'. Check out photos of trimless tanks to make the decision.

Herbie overflow - you need 2 holes for sure in the overflow box. You can put the return wherever you want, as a 3rd hole in the overflow or up over the edge. Just make sure your drain holes are big enough for the water flow you want to push through it.

Congrats on the upgrade!

Cheers,

Chris