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971 results for “tank size”

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What to Watch When Keeping Koi in a Tank?

Tank koi need controlled density, regular water changes, sensible feeding, and good light. Size the tank to the number of fish since adults are large; place it in bright, airy spots, avoiding cold or direct sun.

Q&A 📅 August 8, 2026
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Why Does a Crucian Carp Jump Out of the Tank?

Crucian carp jump mainly from poor water quality and low oxygen, driving them to seek air at the surface, or from fright as they seek safer water. Overcrowding or rare water changes imbalance the water, and other fish or outside scares can trigger jumping.

Q&A 📅 August 8, 2026
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Why do we need lights on in a fish tank?

Tank lighting meets the light needs of fish and plants; it aids growth and lets aquarium plants photosynthesize, and stimulates color in colorful fish. Long lack of light dulls their color.

Q&A 📅 August 8, 2026
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Why does my fish tank turn green?

Green water is from thriving green algae, caused by long light/sun exposure, overgrown plants clogging filters, or overfeeding whose rot feeds algae. Change water and adjust conditions; find the cause to prevent recurrence.

Q&A 📅 August 8, 2026
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What goldfish are suitable for a deep tank?

Deep tanks suit sunfish and black moor goldfish, both hardy, adaptable, and lively. Sunfish come in red and yellow varieties, while black moors are large and ornamental. A high-quality filtration system helps reduce water-change pressure.

Q&A 📅 August 7, 2026
Why Does an Arowana Jump Out of the Tank?

Why Does an Arowana Jump Out of the Tank?

The main reasons an arowana jumps out of its tank come down to four situations: 1. poor water quality; 2. trying to catch insects; 3. dripping from the tank; 4. the arowana being startled. All of these can cause jumping. Below our experts detail these four cases.

Pet Health 📅 August 7, 2026
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What does a turtle tank filter do?

A turtle tank filter removes waste and pollutants like feces, remains and food scraps, slowing water decline. By filtering and adding oxygen it keeps oxygen up for breathing, and lowers ammonia and nitrite to steady pH. Overall it keeps water clean and stable for healthy growth.

Q&A 📅 August 7, 2026
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What fish are suitable tankmates for ornamental catfish?

Catfish generally should not be mixed with other fish, as they are aggressive and large and often eat smaller fish. If mixing, choose fish of similar size, such as koi or tiger fish.

Q&A 📅 August 7, 2026
Why Does an Arowana Lie on the Tank Bottom, and How to Respond?

Why Does an Arowana Lie on the Tank Bottom, and How to Respond?

Many arowana keepers have seen the fish lie on the tank bottom, but few know why. Our veterinarian details the causes and responses, hoping to help.

Pet Health 📅 August 7, 2026
What Causes an Arowana to Lie on the Tank Bottom?

What Causes an Arowana to Lie on the Tank Bottom?

Arowana are very sensitive to environment and water changes; noise or big changes inside or outside the tank can cause lying low, as can big water changes or large pH or temperature swings. Our veterinarian details the causes.

Pet Health 📅 August 7, 2026