What are the signs that the fish tank is rotten?
Fish farming is a hobby that requires patience and care. The health of the fish tank directly affects the living environment of the fish. If a fish tank is "rotten", it usually refers to a combination of problems such as deteriorating water quality, damaged equipment, or fish disease. This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a detailed analysis of the signs of a rotten fish tank and provide structured data for reference.
1. Common signs of a rotten fish tank

Signs of a rotten fish tank are usually reflected in water quality, fish behavior, equipment status, etc. The following are some common types of omens:
| Type of omen | Specific performance | Possible reasons |
|---|---|---|
| water quality issues | The water is turbid, smelly, and foamy | Filtration system failure, overfeeding, and delayed water changes |
| Abnormal fish behavior | Fish have floating heads, rapid breathing, and weakness in swimming | Hypoxia, excessive ammonia nitrogen, disease and infection |
| Equipment failure | Noisy filter, malfunctioning heater, flickering lights | Aging equipment, power supply problems, and lack of regular maintenance |
| algae bloom | The tank wall or bottom sand is covered with green and brown algae | Too much light, excess nutrients, and low frequency of water changes |
2. How to judge whether the fish tank is "rotten"
According to discussions among fish keeping enthusiasts across the Internet in the past 10 days, the following are some practical methods to determine the health of a fish tank:
| Judgment method | Operation steps | normal range |
|---|---|---|
| Water quality testing | Use test kits to detect pH, ammonia nitrogen, nitrite, etc. | pH 6.5-7.5, ammonia nitrogen <0.02mg/L |
| Watch fish | Check whether the fish is active and whether there are any lesions on the body surface | Swim freely and have smooth body surface |
| Check equipment | Test filter flow, heater temperature | Stable flow and constant temperature |
3. Solutions to rotten fish tanks
If you find signs of a rotten fish tank, you can take the following measures to remedy it in time:
1.Change water: Immediately replace part of the water body (1/3 recommended) and use water quality stabilizer.
2.Clean up algae: Manually remove algae from the tank wall and reduce light time.
3.Check equipment: Clean or replace faulty equipment to ensure normal operation.
4.Adjust feeding: Reduce the amount of feeding to avoid contamination of water quality by residual bait.
5.disease treatment: If the fish is sick, isolate it and apply medicine in time.
4. Suggestions on preventing fish tank rot
Based on recent popular fish farming topics, here are the long-term recommendations for preventing fish tank rot:
| Precautions | Execution frequency | Things to note |
|---|---|---|
| Change water regularly | 1-2 times a week | Change 1/3 of the water each time |
| Clean filter material | 1 time per month | Rinse with original tank water |
| Test water quality | 1 time a week | Focus on ammonia nitrogen value |
| Control feeding amount | 1-2 times a day | It is better to finish eating within 3 minutes |
5. Summary of recent popular fish farming issues
Based on the popularity of discussions on the Internet in the past 10 days, the following are the TOP5 issues that aquarists are most concerned about:
1.How to prevent fish tanks from rotting due to high temperatures in summer?- It is recommended to use a fan to cool down and avoid the water temperature exceeding 30°C.
2.What should I do if the water quality suddenly deteriorates after adding new fish to the tank?- The new fish may be carrying bacteria and need to be isolated and observed.
3.What causes white hair in fish tanks?- Usually mold grows and filtration needs to be strengthened.
4.How to deal with the black and smelly bottom sand?- It is recommended to clean the bottom sand thoroughly or use a bare tank instead.
5.What should I do if the pH value of my fish tank suddenly drops?- Coral bone can be added to adjust pH.
Through the above analysis and data display, we hope to help you detect the signs of a rotten fish tank in time and take effective measures to maintain the health of the fish tank. Remember, prevention is better than cure, regular maintenance is key!
check the details
check the details