Aquarium keeping you can trust

Paracheirodon innesi

Tank volume:

from 60 L

Maximum size:

up to 4 cm

Temperature:

20–26 °C

pH:

5–7

Betta splendens

Tank volume:

from 20 L

Maximum size:

up to 6.5 cm

Temperature:

24–28 °C

pH:

6.5–7.5

Poecilia reticulata

Tank volume:

from 40 L

Maximum size:

up to 5 cm

Temperature:

22–28 °C

pH:

7–8

Corydoras aeneus

Tank volume:

from 80 L

Maximum size:

up to 7.5 cm

Temperature:

22–28 °C

pH:

6–7.5

Pterophyllum scalare

Tank volume:

from 200 L

Maximum size:

up to 15 cm

Temperature:

24–30 °C

pH:

6–7.5

Symphysodon aequifasciatus

Tank volume:

from 250 L

Maximum size:

up to 17 cm

Temperature:

28–30 °C

pH:

5.5–7

Top 15 beginner aquarium plants you can grow without CO₂

15 plants that thrive at moderate light, without CO₂ injection and without a nutrient substrate. Size, growth rate and planting zone for each. The ideal starter set for a 38–100 L tank.

Neon tetra (Paracheirodon innesi): care, setup and breeding

The world's №1 schooling fish for beginners and one of the trickiest to breed. Water parameters, school size, tankmates, neon tetra disease, blackwater spawning.

10 gallon aquarium setup under $150: a complete starter kit

A real equipment list with prices, step-by-step setup, stocking ideas. The most popular beginner tank size with a concrete budget.

Cherry shrimp (Neocaridina davidi): care and breeding for beginners

The easiest aquarium shrimp for beginners: parameters, food, breeding, colour grades, common mistakes. Real numbers for keeping a colony from 10 individuals to hundreds.

Betta fish care: a complete beginner's guide (Betta splendens)

Tank size, temperature, filtration, diet, tankmates, common diseases, breeding — everything you need to know about bettas before buying one. Real numbers, no 'lives in a cup' myths.

Filters and aeration for aquariums of every size — the complete guide

How to size a filter to your tank, calculate turnover, pick the right type, and decide if you need extra aeration. From nano cubes to large biotopes.

Aquarium fish diseases — diagnostic algorithm and 8 key conditions

How to spot illness by behaviour and look, a four-step diagnostic protocol and treatment outlines for the 8 most common diagnoses: ich, velvet, columnaris, dropsy, swim bladder, saprolegnia, internal parasites, gill flukes.

Velvet disease (oodinium) in aquarium fish — symptoms, treatment, prognosis

Golden-grey 'dusty' coating on the skin, fast breathing, loss of appetite. A dangerous dinoflagellate parasite — treated with darkness, copper and heat. Without therapy, mortality in 3–7 days.

Columnaris in aquarium fish — telling it from fungus and treating it

A bacterial disease often mistaken for fungus. Greyish-white cotton-like patches on head and fins; the aggressive strain can kill in 24 hours. Treatment — antibiotics, lower temperature, salt.