Auto Top Off:
A club member generously gave me a top off kit they were not using.
It's a DIY kit which has a mold-a-holder, dual float switches, snail guard and relay.
I started out with assembling the float switches:
The mold-a-holder plastic is a thermoplastic that becomes soft around 180F, you can then mold it to shape of your tank or sump and when it cools it will harden into a semi-flexible plastic.
The kit comes with a relay to wire to the switches to and a project box. This tank is in my living room and I don't want to hear the clicking of the relay every time the ATO triggers. So I'm swapping this mechanical relay for a solid state relay.
Wont be using this!
I am using this SSR though, I got a bunch of these on ebay for $5 each, they quitely turn on the AC line for the pump on and off. A small LED on the relay lights when active too:
The float switches are wired to a low voltage power source, when the floats are down the power activates the SSR and closes the circuit for the pump. I'm connected to a Tom's Aqualifter right now which is silent, but doesn't handle much head pressure so I would like to switch to a peristalic pump.
Closed up:
Float switches mounted onto the return section of the filter back wall. I was forced to use this exact location because the magnet from the Jebao pump on the right side of the return was trigger the float switches.
Tubing from the aqualifter is mounted to the light's splash guard. This location keeps an air gap so the ATO can't back-siphon onto my floor. It also is a location that works when the hood is open. It's right above the return section. I used silicone tubing intead of the usual vinyl, hoping to see if this handles kalkwasser better than the normal vinyl tubing.