"Tropical Water Conditioner will raise hardness by ~80ppm and salinity by ~130ppm, when used at the recommended dose rate. "
This concerns me. Can you get yoour hands on a conditioner more like Prime? This conditioner almost sounds more appropriate for African Cichlids and other such fish.. What fish are you keeping? I almost think they are using the word in a confusing way as "conditioner" ...it is conditioning water to be Hard water appropriate for only certain fish not like the normal conditioners that remove chlorine, chloramines and some that temp neutralize ammonia nitrite nitrates.
oopps. Read your last post. OK... I highly recommend an actual water conditioner and not a salt mix "conditioner"