Lava the Original Lamp 15-Watt Replacement Bulb 2-Pack - Walmart.com
Put a 25w bulb into this 11' lava lamp rated for 15w. 15w bulb wasn't enough to get the wax to flow and 25w brings it to life. but... is this safe? :
Status Small Screw Refrigerator Bulbs 15W 2 Pack - Buy Online at QD Stores
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11.5" Lava Lamp Replacement Light Bulbs — Bird in Hand