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Dechlorinate water with fish in it?

Updated: 11/11/2022
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16y ago

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hello, tank water should be dechorinated before the fish are put in but if u have forgotten u can put it in after as long as u dont do it all the time. You can buy chlorine neutraliser from any aquarium or if u cant buy it u can put the water in a clean bucket and let it stand for just under a week and the chlorine in the water will vapourise therefore making the water de-chlorinated. Hope this helps mate :oD

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Q: Dechlorinate water with fish in it?
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Why do your fish die one hour after you put them in the tank?

Perhaps you did not dechlorinate the water beforehand?


Does Betta fish water have to sit out if it is tap water?

sitting the water out overnight de-chlorinates it. chlorine is very bad for fish. and litting the water sit lets it evaporate. it also saves you money from having to buy them bottles that dechlorinate for you.


Do you still need to put conditioner in the tank for a betta fish with filter already?

Yes, definitely. The conditioner not only keeps your water quality great, but it also dechlorinates the water, which is necessary for any fish to survive. If you are using distilled water, then you do not have to dechlorinate it, but if your water is from the tap or is chlorinated, then you must dechlorinate it. Also, a quick word of advice: Check to see if your conditioner also removes chloramine! Chloramine is toxic to fish, and some water conditioners do not remove it. Only purchase the best water conditioner.


Can you dechlorinate your aquarium with hydrogen peroxide?

NO! Hydrogen peroxide will poison your fish. If you go to a pet store they willl have the proper water treatment for your tank. This neutralises all the things in tapwater that are harmful to fish (such as chloramine, ammonia and heavy metals - it's not just chlorine that is bad for them). If you know exactly what is in your local water supply and have a very good understanding of water chemistry, you can use pure crystals of sodium thiosulfate to dechlorinate the water. This is the chemical mixed in most commercial water treatments to remove the chlorine.


Do you have to do anything before you put a fish in a un filtered tank?

If it hasn't got a filter you are limited to the type of fish that will live happily in your aquarium. In any case, use prime in the water to dechlorinate it and neutralise nitrate and nitrite. Without a fliter, you wont have your fish for long and will need to do daily water changes.


How do you dechlorinate a fish tank?

Let it stand for a couple of days with the aerator going should do the trick or go to a pet or aquarium suplyer and they will give you the right material to do it more quickly. ____________________________________________ Right, there are a number of products available to dechlorinate water instantly, also a good way is to use R/O water (Reverse Osmosis). Many petstores and even a few supermarkets have R/O units and the units are available to purchase for home use.


Is it normal for your Oscar to lay at the bottom of the tank if you just got him today and he is in a 55 gallon tank with great filtration and aeration?

Check the Ph of the water, which will require a Ph test kit from the tropical fish store. Also, did you dechlorinate the water? Did you allow the water in the bag to adjust to the water temperature in the tank before you let the Oscar out? Do you have a water heater, and is the water temperature at least 78 degrees? It sounds like your fish is in shock. There are a number of things which can cause this, including those I have listed. If all of the above have been dealt with, ask the dealer what might be wrong.


How long should you let the dechlorinate set?

Most dechlorinators work instantly.


Which water is better for a betta tap water of bottled?

Regular cold water will do just fine. They don't need aquarium heaters, but they do like it to be anywhere from 65-72 degrees. While they do not respond well to temperature fluctuations, they can handle your tap water pretty adeptly. You only need to dechlorinate it, by using a prepared dechlorinator, or by letting the water sit out overnight to "de-fume". Overall, tap and well water is the best for bettas. If you are unsure about your water quality, bring a sample to Petsmart or your local fish store for a free water test to make sure, and ask their opinion. Bottled, filtered water is too sterile for pet fish. Your fish need the minerals present in natural water. Basically, don't used bottled water. Tap water is fine. If unsure of quality, bring a sample to a pet-store and ask.


Can you take the goldfish out of an aquarium and put in a small container for at least 4 hours without it dying?

You need to use as large as a container as you are able and fill it with water from the aquarium, depending on size of fish a clean 5 gallon bucket normally works very well. For a goldfish keep it cool as possible and out of direct sunlight. A battery operated bubbler are fairly inexpensive and would greatly improve the success rate of your fish living. Just make sure the container contains no residue of chemicals or other materials that can be harmful to your fish. After 2 hours I would remove a third to half of the water in the container and refill it with fresh water. Don't forget to dechlorinate the water.


Every time I add a new fish to my aquarium it dies but the fish I've had in there from the beginning are perfectly fine. Why is this?

maybe stress your other fish might be chasing them or eating their fins, also your fish are use to the water conditions in your tank, they might have diseases from the store and you might not be transporting them right First its important to remember that each type of fish requires a different water PH and even prefer a certain level of the tank from bottom, middle to top. Does your tank allow this? Are you mixing aggressive fish with less aggressive, big with small? You should always dechlorinate your water when adding new fish and take the acclimation process serious and let them adjust to the water for no less than 15 minutes (in the bag), this will also hint at how the other fish are going to react. Like the writer above wrote diseases are very prevalent in your typical fish store because getting your fish from the sea (yes, they still come from divers--especially saltwater) us a LOOONG process for a fish. I have worked at a fish store and those gallon size bags their delivered to the store in are atrocious! Full of feces and could you imagine the quality of the water. Many workers trying to be quick will mix a lot of the same water into the store water and this spreads disease and parasites.the other fish eat them


How does a fish feel out of water?

fish die when taken out of the water because they have gills and fish absorb oxygen from the water and when the fish are taken out they die because of them .