Need to get one for my boys........having issues with fin curling........need to correct this!
So is moderately hard to hard okay?From what I have heard, curled fins can also be genetic. I have some boys with curled fins, yet I have very soft water. Before you start trying to mess with hardness, you need to know your current water hardness. Water hardness isn't something that you should be messing with unless you absolutely have to. It's a much more complex process than just dropping something into the aquarium. I suggest you read this article: http://www.tropicalfishkeeping.com/freshwater-articles/water-hardness-ph-freshwater-aquarium-73276/
As well as reference this guide: United States Water Hardness Map, What is my water hardness?