2 x GloFish Aquarium Gravel (5 lb. Bags) $5.98 at Amazon
Note: minimum order quantity is 2. Amazon has the GloFish Aquarium Gravel, 5-Pound Bag (Black with Fluorescent Accents) for $3.99 - $1 off coupon
(check green "Save coupon" box) = $2.99.
Add 2 to cart to reach $7.98 - $1 off coupon at checkout (x 2) =
$5.98 with free shipping on $25+ or with Prime.
Original Source of Info