I have had 1/2 bottle of tren for about 1 year. does this stuff spoil? there are some brownish marks on the bottle, is this ok? please let me know. thanks.
The brownish marks on the bottle are sediments from the glue and binders that you didn’t properly filtered out of your solution. Now that they have settled and are adhering to the bottom of the bottle, it is probably actually better and cleaner then it was before. It should still be O.k to use.