Silver bath maintenance

Recently i noticed some problems with one of my silver bath solution.
While developing plates it was more difficult to spread the developer over the plates

So it was time to start maintenance on my silver bath.
As i did not have any other problems i decided just to boil the solution back to a volume of about 20%.

There is no need to boil it. I just heated it up just under boiling temperature. To reduce the volume to about 20% took me about 1 hour.

After doing this i added the needed volume demi water and the bath turned VERY cloudy.
As you can see the 2 solutions had problems with mixing together.I had to stir it firmly to get a mixed solution.

After that i filtered it twice, checked gravity, added the needed silver nitrate , sunned the bath and filtered it twice again.

Result : a perfectly clear and good working silver bath again.
So it takes a few hours but the result is worth it.

 Silver solution was boiled untill about 20% of it's original volume

 Lot's of dirt after the first filtering

 Gravity is too low. Should be around 1.08

Added extra Silver nitrate untill it reached the exact gravity.

Sunned this solution again, filtered it twice and it was ready for use again