It's like glitter, and you only see it that with the initial burst of bubbles.
Does yours bubble up that quickly when you first switch it on, before going into a column?
Very helpful, thanks Andy
We really need one of the superusers like Christian or Arne...
But I just had one thought - if you have a 25w small reflector (not golfball) that might do the trick with this mix?
Picked up another one this week (ebay bargain, i.e., 'Gold and Silver Lava Lamp')
Original fluid was pretty yellow, so swapped it over straight away, and also gave the inside of the bottle a little scrub with hot water and washing up liquid as it had a film all over it.
No need to remove the wax when cleaning as it's water resistant. Just keep your bottle brush away from the wax.
This one was flowing properly after just 1 hour.
So now you only need three more for a Lunar Glitterball....
And a Lunar!
I love this one !
I'm a fan too now that I've seen one with clear fluid!