I had the same issue. I refuse to drill holes in my 125. I just couldn't bring myself to do it. Lol So I just went with hidden tubing. Well, as much hiding as you can do in a 4 sided, viewable tank.
Sponge under the drainage layer
Tubing up and out of the tank.
Valve at the end to prevent the siphon from being broken and I don't have to suck on the hose but the initial time.
Works like a charm.
Education is the most powerful weapon we can use to change the world ~ Nelson Mandela