10 Best Way To Change Water In Fish Tank

Updated on: September 2021

Best Way To Change Water In Fish Tank in 2021


Luigi's Aquarium/Fish Tank Siphon and Gravel Cleaner - A Hand Syphon Pump to Drain and Replace Your Water in Minutes!

Luigi's Aquarium/Fish Tank Siphon and Gravel Cleaner - A Hand Syphon Pump to Drain and Replace Your Water in Minutes!
BESTSELLER NO. 1 in 2021

Rhinox Glass Drop Checker Kit – 3 Seconds to Read CO2 Levels - 3 Minutes to Setup - Fastest Way to Ensure Sufficient Co2 in Planted Aquarium - Color Change Reflects the Level of CO2 (Co2 Drop Checker)

Rhinox Glass Drop Checker Kit – 3 Seconds to Read CO2 Levels - 3 Minutes to Setup - Fastest Way to Ensure Sufficient Co2 in Planted Aquarium - Color Change Reflects the Level of CO2 (Co2 Drop Checker)
BESTSELLER NO. 2 in 2021
  • HIGH-QUALITY, MUST-HAVE KIT - - - The Rhinox Glass Drop Checker is every aquarium/planted tank’s essential tool. Keep the CO2 levels in your tank consistent by checking it regularly. This complete kit contains 1 glass drop checker, 1 suction cup, 1 10ml CO2 indicator solution, 1 2ml syringe and 1 colour chart.
  • EASY TO USE - - - Make sure your test kit is clean. Drop 5 drops of CO2 indicator into the glass checker and make sure it is stored in the bulbous side of the valve with the opening facing down. Attach this to the side of your tank, completely submerged in the tank water and wait for up to 2 hours.
  • COLOUR CHANGE SHOWS RESULTS - - - Follow the color chart carefully. The CO2 indicator is blue in colour. When it turns green, that’s the right balance of CO2. If it turns yellow, your tank has too much CO2. Make the necessary adjustments and test until you get green.
  • BENEFICIAL LEVEL OF CARBON DIOXIDE - - - A healthy tank has a carbon dioxide to water level that contains anywhere between 20 to 40 ppm (parts per million). 30 ppm is the optimal level that is healthy for both plants and fish. Keep CO2 levels optimum for all your aquatic plants to grow lush and beautiful.

Natural Rapport Aquarium Gravel Cleaner - The Only Gravel Cleaner Fish Need - Professional Aquarium Gravel Cleaner to Naturally Maintain a Healthier Tank, Reducing Fish Waste & Toxins (16 fl oz)

Natural Rapport Aquarium Gravel Cleaner - The Only Gravel Cleaner Fish Need - Professional Aquarium Gravel Cleaner to Naturally Maintain a Healthier Tank, Reducing Fish Waste & Toxins (16 fl oz)
BESTSELLER NO. 3 in 2021
  • NATURAL, HEALTHIER AQUARIUM - Our gravel cleaner introduces healthy, natural bacteria that biologically eliminate excess fish waste, fish food, toxins, odors, and other organic wastes. This leads to cleaner, clearer water, and a healthier fish tank.
  • EXTEND YOUR TANK MAINTENANCE - Our professional grade, non-chemical formula will extend the time between water changes and vacuum gravel cleanings by eliminating organic waste that accumulates in your aquarium. It also helps correct for overfeeding.
  • MAKE YOUR AQUARIUM WATER FISH SAFE - Our gravel cleaner not only improves water quality and clarity and minimizes odors, but also naturally reduces the build-up of toxic ammonia and nitrite as well as problem-causing nitrate and phosphate.
  • PROFESSIONAL, EASY, ONE-STEP APPLICATION - Simply add one capful per 10 gallons to your Saltwater or Freshwater aquariums for cleaning. That's it, done! No messy accessories, tools or pump. Our 16 oz bottle treats up to 960 gallons, now that's value.
  • OUR PROMISE - All supplies made in the USA. We have a customer promise of "complete product delight". We are a family-owned business passionate about making natural products with high standards keeping your beautiful fish safer and healthier.

MingDak LED Aquarium Hood Light - Fish Tank Light, Full Spectrum LED Aquarium Light with Extendable Brackets,Combination Lighting Color White & Blue & Green & Red & Purple,6500K,30 Inches

MingDak LED Aquarium Hood Light - Fish Tank Light, Full Spectrum LED Aquarium Light with Extendable Brackets,Combination Lighting Color White & Blue & Green & Red & Purple,6500K,30 Inches
BESTSELLER NO. 4 in 2021
  • MORE SPECIALIZED LIGHT SOURCES: Mingdak 6500 Kevin full-spectrum LED aquarium light which have the spectral range of lighting from 400 to 700 nanometers that is needed by plants & symbiotic zooanthellic algae have produced the best freshwater plant growth.Your java moss, marimos, banana plants will thrive under the powerful Led lights.
  • BRINGING FISH COLOR OUT:Mingdak LED aquarium light gives off vital energy, influences fish behavior,brings out the Best Color of your Fish.This Mingdak LED Aquarium light is 25% brighter than other standard light.Bright light not only helps enrich the color of the fish,but also helps darken the pigments of many fish, making them stand out.
  • MAKING AQUARIUM VIEWING PLEASURE:Mingdak LED Aquarium Lights provide the ultimate opportunity to create a realistic underwater home-aquarium environment.Two lighting modes, the full-spectrum dayling will produce a beautiful halo effect on the water and your fish and plant will come to life under these lights,and blue moon light help to observe nocturnal behavior.
  • ENERGY-SAVING AND LOW RADIATION:Mingdak LED aquarium light fixtures are extremely energy-efficient,low power consumption and 50,000 hour bulb life.This light takes very little energy to produce and has a low heat output.They will not affect the temperature of your tank water in any way.
  • EASILY MOUNTS TO YOUR AQUARIUM:Aluminum housing and adjustable mounting legs fit both rimless and framed aquarium tank from 30 inches to 38 inches

Aquarium Gravel Cleaner with Clips, Quick & Easy Assembly, Long Nozzle Manual Water Pump, Great for Frequent Water Changes, Fish Tank Cleaning Kit for Saltwater and Freshwater

Aquarium Gravel Cleaner with Clips, Quick & Easy Assembly, Long Nozzle Manual Water Pump, Great for Frequent Water Changes, Fish Tank Cleaning Kit for Saltwater and Freshwater
BESTSELLER NO. 5 in 2021
  • ✔ ALL INCLUSIVE AQUARIUM CLEANING KIT --- Everything you need to properly and effortlessly change your aquarium water is included in the all-in-one gravel cleaning kit by SunGrow. Not only do you receive the long nozzle, durable Rhinox tubing, priming bulb and discharge hose, but also a pair of high-quality mounting clips.
  • ✔ ELIMINATES UNPLEASANT FISHY SMELL --- We all love the look of our pet fish, but the fishy smell is a different story. The best way to keep your aquarium fresh is by regularly cleaning the gravel and substrate of debris. Fish waste, excess minerals and leftover food can get caught and begin to cause an unpleasant odor.
  • ✔ EXTRA LONG, FLEXIBLE NOZZLE --- Because the flexible vacuum nozzle in the practical SunGrow Aquarium Maintenance Kit is an extra long 4.5 feet (135cm), it makes cleaning your fish tank even easier. With such a long nozzle, there is no need to worry about getting your sleeves wet or spilling water.
  • ✔ EASY TO USE MOUNTING CLIPS --- Each aquarium water changer is easily mounted to the rim of your fish tank or bucket using the included pair of blue tube clips. With the help of these efficient mounting clips, any 8mm to 16mm hose or tubing is firmly held in place for quick and easy tank cleaning.
  • ✔ USEFUL FOR A VARIETY OF SUBSTRATES --- More than just a simple gravel cleaner, the easy prime suction pipe works on many types of tanks and different kinds of aquarium or terrarium substrates. The high quality siphon works on quartz gravel, sand, vermiculite and crushed coral for reef and brackish water tanks.

boxtech Submersible Aquarium Heater 50W/100W/300W - Explosion-Proof Automatic Digital Control Water Fish Tank Thermostat, Heat-Resistant Quartz Made for 5-80 Gallon

boxtech Submersible Aquarium Heater 50W/100W/300W - Explosion-Proof Automatic Digital Control Water Fish Tank Thermostat, Heat-Resistant Quartz Made for 5-80 Gallon
BESTSELLER NO. 6 in 2021
  • 🐟【Pls Notice】Before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater.
  • 🐟【For 30 - 80 Gallon Fish Tank】Boxtech 300W aquarium heaters suit for 30 - 80 Gallon fish tank. Voltage:110V, power cord is 5.57ft, please choose the right wattage aquarium heater according to your tank size.
  • 🐟【Temperature Control】Design with External Temperature Controller, Temperature Range is 20℃ -32℃(68ºF-90ºF), when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating.
  • 🐟【Maximum depth】Submersible Aquarium Heater Max deep water immersion 50CM(20 inch/1.7 FT).Fahrenheit degrees =1.8 * Celsius degrees +32. Safety Protection: Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevents electricity leakage. It is more safety for your love fish.
  • 🐟【Submersible in water fully】Stick the heater horizontally onto the tank side near the water intake or on the way of water flow. Keep the aquarium heater fully submerged in water.

AA Aquarium Green Killing Machine 9 Watt | Internal UV Sterilizer System with Power Head | Kills Algae, Bacteria, and Waterborne Pathogens | Easy, Submersible Installation

AA Aquarium Green Killing Machine 9 Watt | Internal UV Sterilizer System with Power Head | Kills Algae, Bacteria, and Waterborne Pathogens | Easy, Submersible Installation
BESTSELLER NO. 7 in 2021
  • Say GOODBYE to GREEN and HELLO to CLEAN. AA Aquarium’s Green Killing Machine eliminates cloudiness, algae & bacteria to give your fish the crystal clear water they need for perfect health!
  • The #1 UV in the US – over ½ Million sold. Patented technology that no one else has and the ONLY UL Safety Tested internal UV kit – Be safe with your tank and fish!
  • Patented Sealed UV BULB - you never touch glass! Chambered bulb assembly for high water dwell time and outstanding efficacy! No gloves-No mess-EZ bulb changes!
  • NO TOOLS REQUIRED! 10 minute installation - Follow simple steps to get clear water in days. No Guessing – Control Box LED tells you when to change bulbs!
  • 3 Year Warranty on Pump; 4 pcs sponge pre-filter; Pump rated 220L/Hour. Perfect for aquariums up to 50 Gallons (210 L). UL/cUL Listed

Bonlux RGB LED Aquarium Light - 29"-37" Color Changing LED Fish Tank Hood Light with Extendable Brackets, Dimmable RGB LED Light for Freshwater Saltwater Marine Full Spectrum Light

Bonlux RGB LED Aquarium Light - 29
BESTSELLER NO. 8 in 2021
  • Benificial for Fish & Plants -- Fish, aquatic low light and higher light plants are growing good under RGB aquarium hood lights kit, like money wort, java moss and coral etc.. You can fell free to create different lighting effects of sunrise, noonday, and sunset by using the remote, which provides a healthy and vibrant environment for fish tank.
  • Multi Color & Modes -- Fish tank light has 16 colors and 4 modes with wireless remote. Also, light has a dimmer and options for flash, strobe, fade, smooth transitions, colors are vibrant on your aquarium.
  • Wide Applications -- Fish tanks color led lights ideal for freshwater/saltwater fish, and low light level plants like java moss, java ferns, banana plants, anubia, hornwort and anacharis.
  • Adjustable Length -- With extendable bracket to adjust the length to fit your fish tank, fits tank 29inch-37inch (75cm-95cm) in length.
  • High Quality Material -- Multi-Color Aquarium light is made of high quality plastic materials, such as aluminum alloy, plastic and stainless steel stent. It is specifically designed for reliable and long term performance.

Hygger 12V DC 5-in-1 Aquarium Gravel Vacuum Cleaner Water Changer Kit Electric Fish Tank Cleaning Tools Siphon Pump Sand Washing

Hygger 12V DC 5-in-1 Aquarium Gravel Vacuum Cleaner Water Changer Kit Electric Fish Tank Cleaning Tools Siphon Pump Sand Washing
BESTSELLER NO. 9 in 2021
  • Quick water change and easy gravel cleaning with Hygger Electric Gravel Cleaner Kit. DC powered adapter with UL certificated, safe to use, energy saving, makes sand cleaning and water change a breeze
  • Aquarium Gravel Cleaning kit includes a non-slip handle, 4 sections of extension tubes, 1 water pump, 1 sand vaccum, 1 debris vacuum, 1 brush head, 1 sand washing head, 1 filter housing and 6.5 ft water pipe
  • Sand washing head attachment for cleaning coarse gravel, sand vacuum for cleaning fine sand, brush head for cleaning dirt on the substrate, debris vacuum for vacuuming out the debris in gravel, intake strainer for water changing and filter housing for trapping large particles
  • Extendable Pole: Build in 4 sections tubes, it can be extends from 11.4 inch to 32.7 inch which is long enough to clean up to 3.2 ft depth tank. Threads together with extension tightly no flexing, white seal ring prevents leaking
  • Water pump provides strong water flow up to 396 GPH (6.6 Gallon per Minute), easy to assemble and detach, drains and fills aquarium rapidly and effectively

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml
BESTSELLER NO. 10 in 2021
  • POWERFUL TREATMENT: Seachem Prime is a complete and concentrated conditioner for both freshwater and saltwater fish tanks, working hard to remove chlorine and chloramine.
  • REMOVER: Seachem Prime immediately and permanently removes chlorine and chloramine, successfully allowing the bio filter to remove ammonia, nitrite, and nitrate while they are detoxified for 48 hours.
  • DETOXIFIER: Seachem Prime effectively detoxifies ammonia, nitrite, and heavy metals found in the tap water at typical concentration levels, providing a ideal environment for your betta, tetra, or other fish.
  • USE: Use 1 capful (5 mL) of Seachem Prime for each 200 L (50 US gallons) of new or replacement water. For best results, add Seachem Prime to new water first. For exceptionally high chloramine concentrations, a double dose may be used safely. For smaller volumes, use 2 drops per gallon.
  • SAFETY: In case of an emergency, the 5x dose of Seachem Prime may be used for both ammonia and nitrite. Use a ½ dose if the water temperature is > 30°C (86°F) and chlorine or ammonia levels are low.

How to Correctly Perform an Aquarium Water Change

If you want healthy happy goldfish then water changes are one of the most important activities you will engage in order to provide great goldfish care.

If you want happy healthy goldfish then water changes are one of the most important activities you will engage in order to provide great goldfish care. It is even more important to do it correctly so that you do not provide unwarranted stress to your goldfish.

Do not remove your goldfish during water changes
This is one of the most common mistakes made by new persons caring for their goldfish. This method involves keeping your goldfish in the tank while changing the water. Removing your goldfish is not only unnecessary and very stressful for the fish. Removing your goldfish also normally involves your goldfish coming in contact with a net or container which rubs off some of their protective slime that protects them from diseases and supports their overall health.

What do you need for a water change?
Gravel Vacuum
Containers for holding new water and siphoning out old water (preferably 2 of the same size containers)
Chlorine and Chloramine remover

How much water to change?
It is recommended for good aquarium care to change between 10-25% of the total water volume. The reason behind this is that the chemical make-up of the water in your fish tank changes over time and changing to much may drastically change this. Goldfish are stressed by big changes in their environment and we want changes to be as slow as possible.

How to do a Partial Water Change
Fill your container with cold water from the tap
Allow the water to run for a few seconds first to ensure that you are not getting additional minerals that may have built up in the pipe.
Use cold water as this will more quickly change to the room temperature than filling with hot or warm water
I like to fill my container half way then added the recommended amount of chlorine/chloramine remover and then continue filling so that the water flow mixes in the remover. However, this step is not really necessary and it is just me being thorough.
For goldfish it is recommended that you let the water sit for 24 hours to adjust to the room temperature. Seeing that you will not be using a heater in your tank, this will insure that your tank water and new water are both the same temperature eliminating a temperature change shock for your pet goldfish.
If possible rest the empty container on the ground and place the end of gravel vacuum into container. Check to ensure that this does not come free and spill water everywhere.
Begin the siphoning action by moving the gravel vacuum up and down in the water a few times. Be careful when doing this to ensure that you do not hit your goldfish.
Once the siphon action starts be sure to go along the bottom of the goldfish tank to ensure that you are getting out as much waste as you can.
Once your container is filled remove the gravel vacuum to stop the water flow and empty the container.
Finally add your water that you have prepared to the tank.
You can do this by simply pouring the new water into the aquarium. Be gentle with this if you have decorations and gravel that you do not want to disturb.

Related Bestselling Lists That You Might Like