The ich information is inaccurate. Ichthyophthirius Multifilis causes white spot in FRESHWATER fish, not marine fish. Marine ich is caused by cryptocarryon irritans. They are similar but Ichthyophthirius Multifilis has a different life cycle and is really the source of most of the crypto myths. It can go dormant for much longer in a freshwater aquarium and increasing tank temperature can speed up its life cycle. It is also less deadly than marine ich.
Part of this is because you stole most of "your" information WORD FOR WORD from this very well known freshwater fish disease guide...
http://www.fishdeals.com/fish_diseas...sdisease.shtml