dOOg,
Thanks for following along and the comments! I think planning a grow at work is great, u are getting paid for it!

After some homework I think when I do get an RO unit I will buy the small boy With the 6K gal filter. Around 100$ on amazon with free shipping.

That would pay for itself pretty quick for me. I am starting an indoor heirloom organic veggie grow soon. That will have a lot of 1 gal pots. Ill be using way more water. Ill go nuts trying to harvest snowmelt for that.