You're using the morning dew/sea salt method, and you actually got it to dissolve gold? As far as I know,you are the first person to get this far since Nick himself. So congratulations on your success!
The morning dew/salt method is very tricky because it can lose charge very easily. You multiply it's quality using exactly the same alternation of temperature.
To multiply it's quantity you need to add more alkahest/universal solvent to it. Some authors say 10 parts alkahest to 1 part stone,others say 50/50. I say the surest way is add your alkahest by drops until the stone is just wet and then put it back in your sand bath to re-solidify.
If you need to multiply the alkahest in quantity you wind up dividing its quality very quickly/non linearly. I suggest adding fresh dew/salt water to it extremely gradually. A single eye dropper full of salt water to a pint of alkahest will set your process back about a week. Up to 1/4 of your alkahest's volume of fresh dew/salt will set you back a month or more. If you add more than 40% fresh dew/salt then you might as well start over at the beginning.
Hint: The salt you extracted from the alkahest at the end of the work IS alkahest. It will not set your work back more than a few days if you dissolve this in fresh dew and add it to your batch.
Btw if you have any spare alkahest I would be interested in buying a small sample to try and multiply it.