1/2 drop of blue 2 (darker Blue) , 2 drop of UV clear Blue.
Under UV light.
Just taken
I do allso have under test Blue 3 wich is even stronger but that will be a while before its shown.
The Green as well (none UV green) i have wich is under test is just as strong.
going to add i now bought a real black light becuase i blew my cold cathods up. So the results under UV may not be the same.
Allso recommend spec from the maker is this ->
250g treats between 5,000 - 25,000 litres of water.
I put 250g into 2 ltr's of fluid.
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