fyi you have to have a saw blade with ALOT of teeth to cut acrylic. I tried with a normal saw with big teeth and it shattered. luckly i had my shades on.

Laguna pond supplies sells floats for pond top off--don't see why they wouldn't work for your tank. Also, they're readily available. I'll be going this route whenever I do an ATO for my tank.

float switches
 

Yes, I'm still waiting for my float switches to come in from the US. I ordered a few extra since people have been asking me to build ATO's for them. I'll let you know if they arrive in the next few days.

(btw: I think i was talking to you about 2 weeks ago about this,... Sorry, got super busy with work.)

riggs! which ones did you order? Your in north van, im in north van... I want some float switches!

Jeez... I brought in 100 of these switches a few years ago.
I sold a couple and the rest couldn't hardly give away... :neutral: