Buy Two get One Free One Gallon of Nursery Water to $1.59 ($.67 a Gallon at Kroger through 02/07!) Posted by Harbor Master on 8 January 2018, 3:59 pm Tweet The Coupon Expires 30 days from print. The print limit is two. Click here to print a coupon for Buy Two get One Free One Gallon of Nursery Water to $1.59 (with or without flouride) Kroger has One Gallon Nursery Water on sale for $1 through 02/07/018. Buy three for $3 and use the buy two get one free coupon above and pay $2 for three gallons or $.67 a gallon!