Hi Toby, It's Mo. Don't know if you remember me since it's been a few years, but I hope you do! Hope everything is well with you! My tank crashed back in Dec 2011 and I had to shut it down due to other things going on in my life. I am now starting back up and as I remember you did me a fantastic deal on my RO unit, so I was wondering what you could do for me, if you still do have RO units available. I believe it was a 4 stage unit with pressure gauge and tds meter. It was the one with 3 canisters along the bottom and the RO unit on top. Thanks and look forward to hearing from you and also getting my fingers salty again! Regards Mo. p.s. I tried to pm you this, but your inbox was/is full.