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Saltwater is generally made from commercially made salt (specifically for marine aquariums, not "aquarium salt" used for cichlid tanks) and filtered freshwater. Some people living near the ocean collect natural saltwater, but that can be polluted and usually needs to be filtered (which may cost more than making saltwater).

Go you petco or petsmart or anyother place that sells fish they should have instant ocean sea salt their the ratio it 1/2 cup of the salt per gallon read the box to make sure

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14y ago
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12y ago

Most people use commercial saltwater mixes. They add water which is preferably filtered by reverse osmosis and sometimes also deionized.

The salt mix is added to the water and allowed to dissolve and mix for a day or so.

Some companies make salt mixes that can be used in much less times.

They do this by dissolving everything except the NaCl and the Mg in advance and then have you add the ingredients in descending order.

You can make your own mix and if you do should add ingredients in descending order of abundance in the water. The purest chemicals you can get should be used.

Water should be filtered by RO if possible.

One common method to make salt water is to purchase a plastic trash can and a small submersible pump and heater. The water is first added then the salt mix.

The pump mixes this over night.

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13y ago

Yes. Go to a pet store, petco or Walmart and find a bottle that says specifically for fish in salt water. In the bottle is a formula for making salt water, just follow the directions.

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8y ago

Add salt only if needed and if you know the recommended concentration for your type of fish. Do not add salt to water plants and freshwater creatures.

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Q: How do you make salt water for an aquarium?
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Related questions

Can you raise sea urchins in your salt water aquarium?

You can raise a sea urchin in a salt-water aquarium. There are no fresh water sea urchins so you would need a salt-water aquarium to properly care for the urchin.


Why can't aquarium salt be used for a puffer fish to make brackish water What is the difference between aquarium salt and marine salt What happens if aquarium salt is used instead of marine salt?

Aquarium salt is manufactured for different reasons than making your aquarium the perfect environment for salt water fishes. You may use it in an emergency, but long term is harmful to your fish. Marine salts contain the necessary salts and minerals that fish need are the best salt to use.


Why top off with salt water in a salt water aquarium?

killing germs.


Should you add salt to fresh water tank?

Aquarium salt, not sea salt. Make sure it is freshwater salt, not marine salt or iodized. Salt in fresh water tanks can reduce stress and help in healing. Many types of fish including the live bearers and gold fish greatly benefit from it , helping to promote reproducing.


Can you make aquarium salt from regular salt?

No - aquarium salt has a different chemical composition to that of common table salt.


How do you make saltwater for aquarium?

You need to purchase a salt mix and add water. Then mix overnight and check the salinity the next day. You want it between 1020 and 1025. Also, make sure the water is the same temp as the aquarium. You may need a little heater in the salt water you are mixing.


What is aquarium aqua salt?

Underwater sea animals live in salt water


Do you have to get a scuba license to own a salt water aquarium?

No you don't.


What kind of water do hermit crabs like?

they need dechlorinated fresh water, and dechlorinated salt water made with aquarium salt.


What does it mean if salt water aquarium fish have freckle like spots on them?

You should ask this question in the 'salt water' section.


How do you lower salt level?

for a aquarium what I do and im kinda new is take out a little water and add fresh water. Has to be fresh water from store that has reverse osmosis if I spelled it right. Make sure when you remove water to check the salt level.


Why not use regular salt for a salt water aquarium?

Regular salt may contain anticaking agents nuisible for fish.