I have 13 tanks running currently. South and Central America, Asia, and Africa all represented. I have a shower valve in the corner of the fish room that is adjusted down to ruffly 75F and the majority of my tanks run 80F. I hang my water fill device on the side of the tank which could be a 20g or a 29g or a 55g or 220g. I then start the water and add the approximate amount of Safe that I need according to how much water is being replaced. That could be 10-90%. 1/4 teaspoon of Safe treats 300g. I guess at what division of 1/4 teaspoon I need per tank.
I also have experience working for a custom aquarium installation and maintenance company in NYC. We followed the same practice of add the amount of declor for water changed if not using RO/DI water. We also added untreated water to aquariums if we were just topping off due to the amount of chlorine being diluted in the system and evaporated within 24hrs. No, chloromine does not evaporate.
I do not add chemicals to control ammonia, nitrite or nitrate. I have BB for the first two and plants and water changes for the third. No chemicals means no carbon or chemi-pur either.
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