i bet it was the soap. i added too much and it became frothy.
i'm still not sure about what causes the bubbles in wax. let this thread serve as a place to propose and test theories!
I suspect the water in the bubbles has been heated at the bottom and can't cool off as easily when trapped in a bubble. My p/y colossus was doing that. It looked like a Galileo thermometer; the bubbles would just hang there forever.
I also have a '73 aristocrat that wasn't bubbly until I changed the fluid. It gets to the point that it almost looks like green foam, but the flow is still great. I'm wondering if it's the dish soap I used for surfactant. I used Joy soap. Someday when I break down and buy a hydrometer I'll swap the fluid again and use a different soap to see what difference that makes.
Anyone ever get any resolution with this? I've got a couple of lavas that are really bubbly. I know it can't be heat (in my case) as I have one that does it in the first 30 mins. And I know it can't be the wax being shot since it hasn't been run that much.
Your wax is melting in 30 minutes? That sounds like you might be running it a bit hot.
I may have a solution to the bubble problem. I’ve been working on 5 lava lamps; neon orange, red, purple, tangerine and green. The purple is a nineties lamp/wax and the others are all 60’s and 70’s lamps. I’ve now changed the solution between four and five times for each lamp for a number of reasons; to many bubbles, foggy water, and sticky wax (attached to glass). It seams like each lamps wax is a bit different and requires small adjustments as I go, for instance the green obsorbs bubbles the fastest and the red is heat sensitive and will stick to the glass almost instantly if I boil the water to get rid of the bubbles. Anyway, today I’ve had a Eureka moment. I’ve changed the water again in the red, green, tangerine and purple lamps. I heat them up melting the wax completely and then simply pour the water from the lamp down the sink slowly adding hot water to the glass vase not being overly delicate either. After I’ve “cleaned” the wax a few times with the hot tap water I fill the vase up half way then poured boiling hot kettle water directly into the lamp sending the lava spinning into tiny bubbles. I then poured 2 tablespoons of Isopropyl Alcohol 70% and began adding a teaspoon at a time of highly concentrated Epson Salts with some crystals still visible and added ZERO soap. It worked! My purple 90’s lamp has Zero bubbles now, the red pain in the butt lamp is down to 5% bubbles, the tangerine has maybe 2% bubbles and the green-is still irritating me because I’m finding it difficult to balance the heat and salt levels BUT the bubbles are almost gone in that lamp as well. When I say bubbles I really mean a previous bubble problem! At one point a couple of these lamps looked like they were full of bathtub bubbles mixed with lava. Anyway, give it a try :)
"I "MAY" have a "work around" solution to the bubble in the wax problem , I am testing it at the moment and it showing some promise.