Since living in Florida I have raised many tads using spring water and later Amquel conditioned tap water. Recently I switched to Amquel Plus (as it removes more harmful nitrates and nitrites in my salt water changes), suddenly there is a problem with my tadpole limb development. I am not sure if this a coincidence or Amquel Plus hinders this development. I would love to hear if anyone is using Amquel Plus and has good or bad experiences. The stuff smells like rotten eggs when first used but the manufacturer assures me it is totally safe and will not harm the animals. Chime in if you have experience with this stuff.