A best bet is the Giant Jellyfish Aquarium with Color-Changing LED Lights (pictured) for $99 before the above coupon, $79.20 after. With $14.99 for shipping, that's $20 off and the lowest total price we could find. It includes seven faux jellyfish, removable plastic plants, color-changing LED lights, and more. Two AA batteries are required (not included).
Placing a smaller order? Get $10 off orders of $49 or more via coupon code "HS12P2". Shipping starts at $5.99. These coupons do not stack. Coupon expired January 30.