I wished I could remember the name of this stuff.. I'll have to get back with you on it. But I got it at a Janitorial Shop. No acid etching, just a good cleaning/scrubbing, and mopping.. but you just dump some in an area, and take a wide micro fiber mop and spread it around. It may take 6 coats for it to look like this, but it's a good concrete sealer, and it's like $35 for a gallon, and will cover this much area or more. Drying time between coats is about 30 min. The is in our mother room, but we used it in the grow room too. You may have to re-coat it once every year or so, but very cheap and easy to do.
EDIT: Thinking back on it.... we covered 1400 sq ft with 2 gallons, so yeah, I goes a long ways. It will dull out with alot of foot traffic, but alls you need to do is mop, and add a couple more coats every year or so. No fumes.
.