Share 'New lava lamp flow issue. What needs added to solution?'

Ok here is my dilemma, I just bought a new 52 oz lava lamp from spencers online, I've run the lamp several times for a period of over 4 hours and I can't get the lava to flow. Once the lamp is heated the lava only domes on the bottoms and occasionally stretches upward but never breaks off and floats to the top. I believe that this is not a heat issue and that instead, it is a density issue with t…