More advice:
Ordinary, Cheap paint thinner makes a good cleaner, but be careful, it is flamable.
Let the solution get warm. Ultrasonics work better with warm solution.
Be warned that any solution that can damage plastics, paint, or the metal itself, will be damaged FASTER in ultrasonics.
This means that painted sights, plastic parts, some night sights and other parts can be damaged or removed entirely.
KEEP YOUR HANDS OUT OF THE TANK.
Ultrasonics and bone marrow don't "mix" well. This isn't something that happens instantly, it causes bad thing to happen over time.
Try to keep parts off the bottom of the tank.
Ultrasonics work better on parts that are in a basket or hanging in the solution.
You can brush parts with a toothbrush to speed up cleaning.
Ultrasonics will NOT remove metal fouling from the bore. It will remove carbon, but you still have to clean the bore with bore solvent, rod and brush.
As above, when parts come out of the tank, they're surgically clean. This means NO lubricant will be left, even in the tiny cracks, crevices, and holes ordinary cleaning doesn't remove.
After drying the parts, LUBE them with a good lube like CLP Breakfree that will penetrate back into those tiny places, and do it IMMEDIATELY.
With no lube parts will rust QUICKLY.
You can dry parts with an old hair dryer.
NEVER, EVER allow the tank to run with no fluid in the tank. This will burn it out ASAP.
You can use small plastic, glass, or metal jars or containers full of solution to clean small parts, by standing them in an inch or so of water.
This allows you to use small amounts of more flamable solutions like lacquor thinner.
If you use plain water, add a few drops of soap as a wetting agent. This increases the flow of ultrasonics through the water.
Allow the tank to run for a minute or so to drive all the bubbles out of the solution. This increases cleaning power.
You can clean larger parts that don't fit in the tank by standing them in the solution and cleaning them 1/2 at a time.