Originally Posted by clarosee
I just bought the Purigen and was wondering how long that would take to clear up the water.
That depends a lot on the condition and cause of your tank cloudiness, and how efficiently your filter is operating. I've had it do a great job almost overnite - other times takes several days to see a marked improvement. Be patient & give it a little time.
Make sure your Purigen layered bag is not too thick with Purigen (1/4" to 1/2" thickness will do nicely), and that the water inflow goes right through the Purigen bag particles. If it fits well in your filter cavity, you shouldn't have a lot of water flow going around the edges of the bag, thus not getting the full benefit of the clarifying agents in the Purigen. Use it conjunction with double-layered filter floss if you can, placed just below the Purigen bag.
Hope this helps.