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VIDEO DESCRIPTION
If you are own a biOrb, choosing the correct fish to go with it, and also, the right combinations of fish, is very confusing!

GET YOUR FISH CHOICE WRONG and your new fish (and you!) will suffer from the wrong decisions!

The following will help you to get things right from day one...

• Choose fish best suited to the quality of your tap water supply. Compare your tap own pH and water hardness to the preferred range of your intended fish. Avoid constantly trying to alter aquarium water to match the fish chosen.

• Avoid adding more fish than your biOrb will support (start off with less!). Use the "one inch per gallon rule" to work out your maximum fish number. Note, the rule relates to the body size of the fish (excluding tail) at full maturity. Most aquarium shops sell young fish... they will grow!

• Fish numbers are part dependent on the level of nitrates in your tap water. Tap nitrate levels above 20ppm will limit the total number of fish supported.

• Spend time researching before making decisions. Fish species vary in terms of what height in the aquarium they prefer. Don't populate your tank with fish all wanting the same requirements.

• If choosing fish that prefer to be in a shoal you need at least 5 to 6 fish. Therefore, a 15L biOrb will not lend itself well to adding species that prefer to be in a group.

• If you plan to create a "community aquarium" (mixed) please remember that not all fish get on with with each other. Use a "fish compatibility chart" such as this one : [ Ссылка ].

• If mixing different fish species (even compatible ones) ensure they all prefer similar aquarium water conditions - temp, pH, water hardness, water flow. Use a test kit: [ Ссылка ]. Compatibility charts only indicate aggression, rather than show water quality compatibility.

• If new to owning fish always start with "hardy" (i.e. easy care) species and avoid "sensitive" species. Sensitive fish will struggle with poor water quality and water that varies.

• Be aware that certain species breed easily (e.g. livebearers). If choosing livebearers go for fish that are all the same sex.

• Decide if you want a heated aquarium or non-heated aquarium. Most tropical fish require heated and sub-tropical fish prefer room temp. A few fish species adapt to both scenarios. Heated tanks are much easier to cycle to allow the addition of fish.

• Spend time researching the fish most suitable for your aquarium and water supply quality: [ Ссылка ]

The following are easy-care options (but always check the compatibility and water quality requirements, especially: pH; water hardness/softness; and, temperature when choosing or mixing these species):
• Platy
• Endler's Livebearer
• Tetras: Red Eye, Black Phantom, Black Neon, Head & Tail Light, Red Eye, Yellow Phantom
• Harlequin Rasbora
• White Cloud Mountain Minnow
• Betta (one male!)
• Corydoras (pygmy)
• Small barbs (e.g. Cherry)
• Various small Danios
• Nerite snails

Difficult species to avoid (or, at least avoid until the tank conditions are fully mature/stable are:
• Neon Tetras
• Rummy Nose Tetras
• Shrimps - Red Cherry Shrimps are best for most water quality scenarios.

Fish I'd avoid adding to a biOrb (of any size):
• Goldfish (produce lots of waste and quickly reduce water quality. They are better suited to ponds and large sized aquariums.
• Dwarf gourami - great fish, but can have a boisterous streak. Most will also suffer dwarf gourami disease (DGD) which is incurable!

Typical parameters for an established mixed species tropical freshwater aquarium:
pH = 6.5 to 7.5
Temp = 22 to 28 degrees C.
Ammonia = 0 ppm
Nitrite = 0 ppm
Nitrate = less than 40 ppm, but ideally limited to 20ppm
Alkalinity = 65 to 135 ppm
General Hardness = 65 to 200 ppm
TDS: 100 to 300 ppm.

Best wishes, Mark
#stepbystepbiorb
biOrb Aquariums | Which fish and how many?

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