Originally Posted by DeborahAnne
Hmmm ok is it something you keep in there or just from time to time?
You can keep it in there all the time. It starts off a creamy white colour, and as it removes organics from the water, it starts to go brown. Once it is dark brown, you can recharge it by soaking it in a 50:50 bleach and water solution until it returns to its original colour. Sometimes you'll need to rinse and repeat the process. Once that's done, rinse and soak for a few hours in an extra strong solution of prime or safe.
One thing to be aware of- unless your dechlorinator is made by seachem, it 'may' interfere with purigen's ability to recharge. This is because of a particular additive that some brands use.