An aquarium is not just a place where aquatic pets can be displayed; it is their new home.
  It is your responsibility as their owner to make sure that their new habitat is as close to their old one as possible, both in terms of the setup and the type of water they live in.
  There are several ways to make it such.
  First, you have to know the things that don't work well for your pets that may be found in the water.
  Next, you have to take the necessary steps to make sure that these are eliminated, leaving your pets' aquatic habitat livable for them.
Tap water in your aquarium The water that we have, which is safe for us, may not be the best home for our aquatic pets.
First of all, the temperature will be different if you pour it in directly from the faucet.
  Second, the chemical compounds in tap water are definitely unlike saltwater or freshwater.
  Tap water has already been cleaned or filtered with the use of chlorine to kill off any organisms in the water that may be harmful to us.
  Oftentimes, chloramine, a combination of chlorine and ammonia, is used since it is more stable than chlorine.
  These are used to make sure our water is more potable, but these can actually be very toxic to fish.
  It can also destroy the bio-filter bacteria that keep your tank healthy.
  This can result in the death of your pets if you are not able to control it to the allowable levels.
Treatment methods Since tap water is the only water source that is available to you, what can you do to keep it safe for your fish and other aquatic pets?  Your first option would be to age and aerate the tank water, if you have the time and the space to store water.
  Over time, the temperature would be close to room temperature and much of the chlorine will dissipate.
  Unfortunately, this doesn't work so well with chloramines since it doesn't dissipate as easily since is more stable.
  The same thing is true with the use of activated carbon filters.
  It usually just works on the chlorine, but not the chloramines.
In both cases, the water after these treatment methods may still be unsafe for your fish.
  Another option, and probably the best one, would be to use an aquarium water conditioner.
  This product contains sodium thiosulfate that reacts to the chlorine, and even the chlorine part of the chloramines, to form chloride ions that are not dangerous to your tank water.
  Many of the aquarium water conditioner brands sold in the market also have chemicals that convert ammonia into ammonium, which is harmless to your aquatic pets.
Aquarium water conditioner Aside from removing chlorine, chloramines, and ammonia from tap water, some aquarium water conditioner brands also provide the added benefit of inducing a protective slime coating of the fish that helps it heal and protect itself from further damage after an injury has occurred.
  Other brands even add electrolytes as well as organic herbs and vitamins that give extra boost to your fish.
  Some also claim to detoxify nitrate, nitrite, and heavy metals from your tank water to make sure that it is truly safe for your pets.
  There are a number of aquarium water conditioner brands out there in the market.
  Referrals from fellow fish hobbyists can be a big help when it comes to purchasing aquarium products.
  If you have no idea at all which brand to use, better ask the store attendant.
  The use of an aquarium water conditioner is indeed very important, especially when changing the water in your tank.
  This is because slight changes in the aquarium's water conditions may already have a significant and damaging impact on your fish and other aquatic pets.
  This is why aside from using an aquarium water conditioner, it is also advisable to  use aquarium test kits and other aquarium products that would give you even more information in this regard.
  All of these would give you further guarantee that everything in your aquatic pets' new home is as safe for them as possible, and that you, as their owner, have provided them with the best possible habitat.