Haha! Tough crowd
. Well you get pictures instead of words this time Bucko!
I bought an RO system like this one. It doesn't have a holding tank and it hangs from the wall on 2 screws.
I bought it from these guys in Texas. Excellent service on the phone, they know their stuff and are very helpful. I told him what I wanted to do and he suggested one of these....
A garden hose intake attachment, so it's plug and play as the faucet was already there, then a couple connection fittings for this...
Way too much line to run from the filter, through a couple walls, and into my grow room. Once in the grow room it empties into a 100 litre tote that has a float valve inlet that they also suggested and sold me.
I can't remember the price but I think it was about US$175 before shipping and dollar difference to Canada. They sell replacement filters as well. It was 5 or 6 years ago, so the price may be higher now.
If I recall my filter is actually called a 3 stage countertop filter, or something close to that.
It comes out at near-zero ppm.