You can hook up the ebay one to a garden hose or to a faucet. It's meant to be portable so you can unhook it when youre done. You do have to tell them which adaptor you want if you order or they will send you a hard plumb kit.
I used my garden hose for both of my ro
setups, great water pressure and kept it all out of the way.
You can also explore other options for the ebay model at their website P U R E W A T E R C L U B
. They have the replacement filters there too, I had to replace my filters (not the membrane, thats good for a couple years) not too long ago and it ran me $30. I also have several tanks including a 125g so I go through ALOT of water. lol
The ebay one is cheap but will generate the same quality water as a larger more expensive unit. The quality is cheaper but if you don't abuse the equipment it should last quite a while. The main difference between the two is the water production total and the filters. The bulk reef supply unit takes any standard sized filters while the ebay one requires smaller ones that I think are harder to get if you don't go to the website I linked above.
You also want to pick up a TDS
(total dissolved solids) meter for maybe $20. This will tell you when you need to replace the filters. You can test the tap water at your house and then see how clean the ro
unit gets it. My tap is at 250tds and my pure water is at 0 which is where it should be.
Hope that helps, if you have any more questions just ask.