tetra-fish-tankIf it is the first time that you buy tetra fish, then you should start your journey with a small number of fish which requires easy caring ways . Setting up tanks and aquarium needs experience.

So, for beginners, it is best to start their journey with only one inexpensive fish known as test fish. Providing your test fish with perfect living conditions and analyzing their reaction towards them will teach you everything about tetra fish tanks and aquariums.

Setting up a tetra fish tank/aquariums

Setting up a tetra fish tank and aquariums include various tasks that needs to be completed in order to maintain overall health of fishes. It includes:

  • Aquarium Materials such as gravel, decorations and stones should be washed periodically with colander. Avoid using soap or detergent to wash these materials as they are toxic to fish.
  • Add Water: one third of aquarium should be filled up with room temperature water, adding tetra aqua safe to de-chlorinate water.
  • Decoration and Plants: rocks, live or plastic plants and ornaments should be very well arranged in an aquarium. Adding live plants involves taking extra care such as they should be planted at specific water temperature and should be moist till the time they are planted.
  • Balance of Water: Fill up the aquarium to the top leaving some space between water level and the cover.
  • Filter, Heater and Thermometer: when using outside filters, you should fill them with filter cartridge. Heater should be secured as per directions and thermometer should be placed far away from heater as possible.
  • Starting Your Aquarium Equipment: start your aquarium and switch on power filter, heater and air pump and make sure that your power is working properly and heater is adjusted to give perfect temperature.
  • Add Fish to the Aquarium starting with floating fish in plastic bags for 15 minutes in your aquarium which allows temperature in plastic bag to become in equilibrium with temperature in aquarium. Add tetra safestart and place fish into aquarium.
  • Cover the Aquarium with hood and turn on the lights.
  • First Feeding and Control: feeding should be done after tetra fishes have adapted to their environment.

Tank Size

Beginners should start with providing their tetra fish, large aquarium of about 20 gallon to provide them with enough space to grow and thrive. Large volume of water ensures easy maintenance of balance of environment.

Tetra Aquarium 20 Gallon Fish Tank Kit, Includes LED Lighting and Decor
  • Tetra Glass Aquariums are made in the USA and are built to last with scratch resistant glass
  • The Tetra Aquarium comes loaded with an LED hood, that provides a natural daytime effect and a Whisper Filter that is whisper quiet while providing powerful, dependable water flow
  • Artificial Plants add a unique, natural ocean feel while giving your fish a place to hide which reduces fish stress
  • The Tetra Kit includes: one 20 Gallon Glass Aquarium, one LED hood, one Tetra Mini UL Heater, one Tetra Whisper 20 Filter, one artificial Boxwood Plant Mat, four artificial plants. Add gravel and fish to complete your aquarium
  • Aquarium Dimensions: 24.2" L x 12.4" W x 16.7" H

Last update on 2020-10-20 / Affiliate links / Images from Amazon Product Advertising API

An aquarium with small size will show frequent variations in water quality and parameters like temperature and pH level which can be harmful for your tetra fish.

Tetra Tank Mates

Tetra fish are known to exist in variety of colors like red, blue and black . Mix of different types of tetra fish in a community tank is a must watch behavior of tetra fish. Their behavior may be described as follows:

  • Schooling fish: tetra fish prefer small groups of single same species. You should ensure that you have a school of six small fishes together.
  • Adding other species of tetra in community tank also works well.
  • Friendly: tetras are observed to be friendly with fishes of different species that are similar in size and activity.


Tetra SafeStart helps to start aquarium from the beginning by adding good bacteria required to break fish waste and start filtration and eliminates need to wait for many weeks for tank to cycle.


Filtration is a important part of keeping fish. An aquarium filter works by keeping water conditions clean and healthy and also maintains aquarium by processing solid, biological and dissolved waste.

Solid waste is removed by mechanical filtration, dissolved waste by chemical filtration and biological waste is removed by biological filtration.

Wisper Filter PF10

Tetra Whisper PF10 power filtration removes waste mechanically, biologically and chemically. Hence, it is a type of three in one filter.

  • Mechanical Filter removes solid waste.
  • Chemical Filterremoves dissolved waste.
  • Biological Filterremoves biological waste.
Tetra Whisper Power Filter 10 Gallons, Quiet 3-Stage aquarium Filtration (26316)
  • QUIET & RELIABLE The Tetra Whisper Power Filter uses 3-stage filtration to create clear clean water – PF 10 treats aquariums up to 10 gallons
  • ABSORBS ODORS Ultra-Activated carbon removes both odor and water discoloration
  • CATCHES DEBRIS Dense dual-sided mesh filters debris and fish waste
  • INNOVATIVE CLEANING POWER Integrated Stay Clean technology reduces buildup on glass and binds small dirt particles to make them easier to filter
  • CARTRIDGE REFILLS Change cartridges monthly uses medium-sized Tetra Whisper Bio-Bag Cartridges (refills sold separately)

Last update on 2020-10-20 / Affiliate links / Images from Amazon Product Advertising API

Tetra FS3060

  • The Tetra FS3060 is a perfect filtration system for 30 to 60 gallon tank. It is multi-stage filtration system that provides you with continuous flushing action maximizing oxygenation and water agitation.




Submersible Aquarium Heaters

Measuring water temperature periodically is very important and its failure may result in death of your tetra fish. Hence, Submersible Aquarium Heaters are used which are technologically advanced in monitoring water temperatures. It gives real time and accurate temperature readings.

Bestseller No. 1
hygger 500W Digital Quartz Aquarium Heater for Fresh-Water and Salt-Water, with External IC Thermostat Controller and Thermometer, Fast Heating Submersible Thermostat for Fish Tank 60-120 Gallon
  • 【Fast Heating Up】voltage 110-120V/60HZ, power 500W, US three-pin plug, heater rod length 10.5 inch, 500W submersible heater for fish tank 60-120 gallon. The heater power cord is 6ft, the controller power cord is 5ft, the thermometer cord is 4.6ft. Temp range: 61-90℉. Fast heating up aquarium heater, it takes about 3 minutes to heat 3.5 gallon water up 3℉
  • 【Fully Automatic Control】very easy and reliable to use. After finishing the temperature setting, the fish tank heater will run automatically by itself. It will stop heating when the water temp reaches to the set temp, please note that the water temp may go up 1℉ more because of the waste heat. When the water temp is cool down to 1℉ less than the set temp, the tank heater will restart heating
  • 【Quartz Tube & Plastic Guard】With high-quality quartz glass tube, it's very durable and explosion-proof, this fish tank heater can be used for saltwater and freshwater aquariums, service life can be 3 years or more. With low profile black plastic guard, easy to hide in the tank. The guard can prevent your aquarium pets from burned, the gaps on the guard is about 3mm, no worries for fish stuck
  • 【Digital LED Display Controller】the external IC temp controller can show the water temp with 2 blue LED digits. Only show Fahrenheit degrees. To set the temp, just press the button over and over until the screen displaying the temp you desired, then stop and wait the digit flashing for 3 times, the setting is done and the led shows the current water temp again. The controller is connect with separate sensitive thermometer
  • 【Fully submersible Aquarium Heater】with strong suction cups on the heater guard and the thermometer, it's easy to install the aquarium heater no to the tank walls or bottom, please keep them fully submerged. The thermometer should be away from the heater and keep water circulation as far as possible. Keep the tank wall clean and check the suction cup regulary is very important to make sure the heater and the thermometer stay in place
SaleBestseller No. 2
Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt
  • All Tetra HT heaters have indicator lights to let you know when the heater is on. It will be red when heating and green when the proper temperature has been reached.
  • The HT10 uses a built in electronic theromstat to automatically maintain water at 78° F which is ideal for most tropical fish. No adjustment is requried.
  • Ideal for aquariums between 2 to 10 gallons with hoods or glass canopies
  • The HT heater is fully submersbile and can be installed vertically or horizontally. It's small footprint makes it easy to conceal behind plants or other décor.
  • Please read all label information upon delivery. DO NOT plug heater into an electrical outlet until it is placed inside the aquarium.
SaleBestseller No. 3
FREESEA 50W Mini Aquarium Heater Fish Tank Submersible Heater with LED Temperature Display
  • Temperature range: 59°F~94°F, display Fahrenheit °F, this heater is designed for1~10 gallons tank.
  • Automatic constant temperature function, when water temperature reaches to specified temperature value, heater will automatically stop heating, when water temperature is lower than the set temperature, heater will automatically start heating.
  • Touch button, cyclic adjust temperature , easy to use and Safety.
  • 【Note】:this heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.
  • 【SATISFACTION GUARANTEED】Gain the confidence to go hard with us! Our Aquarium Heater is built with durability in mind and safety for every design, In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.
Bestseller No. 4
Orlushy Submersible Aquarium Heater 300W-Fish Tahk Heater with Adjust Knob Thermostat 2 Suction Cups Suitable for Marine Reef Fish Tank Sump
  • 300W aquarium heater is suitable for 50 to 80 gallons aquariums,Length - 11 inch,voltage 110-120V, power cord is 6ft, please choose the right wattage aquarium heater according to our size chart.
  • It shows an area to adjust the temperature. It's not exactly accurate but it turns easy and can be adjusted at small intervals.
  • Explosion Proof: 2mm thickened quartz glass,can be used in fresh water and salt water aquariums,easy to hide in the tank.
  • Precise temperature dial from 68 to 89°F allows for complete control of aquatic climate within a 1-degree difference.
  • Adjustable Aquarium Fish Tank Water Heater Sensitive and reliable thermostat maintains uniform temperature. Automatic shut off when the temperature is reached
Bestseller No. 5
300w 150w 50w Submersible Aquarium Heater Auto Thermostat Heater with Suction,LED Small Mini Temperature Display Aquarium Fish Tank Heater for Fish Tank Water (Bonus Thermometer)
  • UPGRADED MORE DURABLE VERSION: Provided the best warm area to your fish in the cold winter.Keeps improving best aquarium heater for your fish tank, after collecting so many comments from customers, we upgrade its function and life time, now it works more continuously and accurately.
  • MORE SAFETY & HIGH QUALITY: This upgraded aquarium heater now updated for more durable Quartz Glass, which is pretty shatter-proof and blast-proof and prevents electricity leakage. And the stronger protective container updated for Anti-melting anti punching double sealed material, it is scald-preventing for your pets and your safety.
  • FREE THERMOMETER: This fish tank heater come with an extra thermometer to show the accurate tank temperature to avoid overheat or freeze. It provide a constant warm environment for your pet fish to stay healthy, suitable both for fresh and salt water.
  • TEMPERATURE CONTROL: Aquarium heater works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably. Setting the temperature by the red knob on the top with range is 64°F - 94°F.High accuracy(±1°F)
  • APPLICABLE TANK SIZE: Our submersible aquarium heaters are perfect designed for different size tank, 50W for 5-10 gallon; 100W for 10-30 gallon; 300W for 30-85 gallon, please choose the suitable power for your tank. And we also recommend to position it near a strong water flow, the outlet of a power filter is ideal, so that the whole aquarium are in the same temperature.

Last update on 2020-10-20 / Affiliate links / Images from Amazon Product Advertising API



A biotope is an aquarium set up to simulate natural habitat. In biotype aquarium, every type of environment condition is similar to natural habitat.

Parasite guard

Parasite guard includes tablets for the the treatment of fish parasites. These tablets dissolve very fast and is considered as a fast remedy for variety of internal and external fish parasites.

Tetra parasite guard eliminates need for measuring or scooping  powder or liquid medicine. This guard removes external and internal parasites such as flukes, lice, anchor worm,

internal worms and flagellates like hexemita or spironucleus linked and related to hole-in-the-head disease.  Parasite guard also protects tropical aquarium fish from secondary infections. It works efficiently  without any need of raising water temperature.

Algae control

Algae control provides solution to control algae in ornamental ponds full of plants and tetra fish. It is very efficient and is used to combat algae blooms, hair algae, string algae and weed in tanks with synthetic liners. Its well concentrated formula is used for the treatment of large amount of water.

Fungus and Ick guard

Ick Guard is a conditioner that is used to quickly clear ick and white spot on freshwater aquarium fish. Ick is the result of changes in aquarium water temperature.

Ick guard also have special and specific ingredients to protect tetra fish from secondary infections.  Aquarium fish fungus treatment is done with the help of fungus guard that treats conditions related to a variety of fungus and bacteria on tropical tetra fish.

It is also used for the treatment of fungus, tail, hemorrhagic septicemia, fin or mouth rot, clamped fins and dropsy.


[Revised and Updated for July, 2019]
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Written by Debra Hutchinson, founder of FishXperts