On vacation this week so I took the opportunity to do some maintenance

One thing in particular was the RO tank. I finally bought a new heater for the tank (more than 6 months ago) and with winter fast approaching I figured I had better get that changed. While I was at it, I also cleaned the Jebao transfer pump and piping along with replacing the light I use to see in the RO tank.
Here is what is actually "in" the 55g RO drum - and the new heater.
and here is what the top of the drum looks like with the new light. FYI, that rusty ring is from the old light - really was time for me to change that.
and what it looks like inside the drum

(I really should clean the inside of the drum!)
Now a sharp eye would have noticed the power strip on the wall in the 3rd pic above...
Well, that power strip is plugged into a GFCI outlet. Figured it's best to be safe when playing with electricity and water.
Ok, now onto the more interesting pic. So, when I add the calcium, magnesium and K2CO3 to the RO drum it obviously takes some time to dissolve...
As always, I think there has to be a better way than just waiting. So, I decided to use the transfer pump to "stir" the drum contents. The grey tube goes into the drum and by changing the various valves, I can circulate the water in the drum very nicely.
And this is basically what the setup looks like most of the time. The blue valve, when open, directs water under the living room and up into the aquarium stand - roughly 6' overall rise. The empty duplex outlet on the wall is actually connected to a switch in the aquarium stand which I use to control the RO transfer pump when doing water changes - just have to move the pump power cord from the power strip to the duplex outlet.
Oh, and there is a small air pump on top of the water heater which runs a large air stone sitting on the bottom of the RO drum. Runs 24/7 to keep the contents well aeriated.
