Quote Originally Posted by JD1stTimer
I am also testing the effect of chlorine in tapwater on the growth of cannabis.
I can tell you right now... it won;t do anything positive... chlorine will only serve to hurt the plants. They will be able to tolerate it to a point, but if your water has alot of chlorine you should probably remove it.

However, it is incredibly easy to remove from tap water. Just pour it into a large jug and let it sit on the counter for > 24 hours, all/most of the chlorine should evaporate in that much time.

The other benefit of leaving the water sitting out is that it adjusts to room temperature, so your not giving your plants a bit of a temperature shock every time you water

good luck!