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Key Management Points for Koi During Winter Dormancy
Reduce Water Flow: Decrease pump flow to 30–40% of normal levels, maintaining only slight water movement. Control Aeration: Switch air pumps to intermittent mode (on for 30 minutes every 2 hours) or set to the lowest setting. Complete Fasting: Stop all feeding when water temperature drops to ≤8℃ to avoid...
What Are the Biggest Risks After Keeping Koi Stable for Over a Year?
When a pond of koi has been kept stable for over a year, it essentially means the pond's ecosystem has reached a balanced state. At this point, the greatest risks are most likely external, including introducing new koi, aquatic plants, or other aquatic creatures. The root cause often lies in...
Why Should New Fish Be Quarantined for 15 Days Before Entering the Pond?
Quarantining new fish for 15 days before introducing them to the pond is a crucial measure to prevent disease transmission and protect the health of the existing fish population. The main reasons are as follows: Observation of the Incubation Period New fish may carry parasites (such as Ichthyophthirius multifiliis) or...
Why Should New Fish Be Fasted for 3 Days After Entering the Pond?
Fasting new fish for 3 days after they enter the pond is a key measure to help them safely adapt to their new environment and reduce risks. The main reasons are as follows: Allowing Recovery from Transport Stress During transportation, koi are in a state of high stress, and their...
How to Supplement Energy for Koi During Fasting Periods?
Supplementing energy for koi during fasting periods primarily relies on indirect and gentle environmental adjustments rather than direct feeding. Here are several safe and effective methods: 1. Glucose Water Supplementation Add 100 ml of 5% medical-grade glucose solution per ton of water (approximately half a cup). Glucose molecules are small...
Why Should UV Lamps (Ultraviolet Lamps) Be Turned On Intermittently?
UV lamps need to be turned on intermittently mainly to balance sterilization efficiency and ecological protection. Continuous operation indiscriminately kills all microorganisms in the water, including toxin-decomposing nitrifying bacteria and plankton chains, which can lead to water quality collapse. Additionally, prolonged exposure to ultraviolet light produces ozone (especially with low-pressure...
Recommended Daily Operating Time for Pond UV Sterilizers
The recommended daily operating time for a pond UV sterilizer (UV lamp) is 4 to 6 hours. The specific duration should be flexibly adjusted based on the season, water quality, and breeding objectives. I. Seasonal Usage Guidelines Season Recommended Duration Optimal Time Period Primary Purpose Summer 5–6 hours 09:00–15:00 Suppress...
Why Can't UV Lamps Kill Parasite Eggs?
UV lamps cannot effectively kill parasite eggs due to dual limitations in their mechanism of action and the structure of the eggs: Physical Barrier Parasite eggs (such as those of anchor worms or Dactylogyrus) have a hard chitinous layer or gelatinous membrane on their surface, which is difficult for ultraviolet...
Should Green Algae or Brown Algae in Koi Ponds Be Treated?
Whether green algae or brown algae in koi ponds need to be treated depends on balancing their ecological benefits with potential risks: I. Ecological Benefits of Algae Natural Water Purifiers Through photosynthesis, they absorb ammonia and nitrites while releasing oxygen, helping to stabilize water quality. Microbial Symbiosis Algal films provide...
Which Is Better for Raising Koi: Earthen Ponds or Cement Recirculating Ponds?
Both earthen ponds and cement recirculating ponds have their advantages and disadvantages. The better choice depends on your breeding goals, technical level, and available conditions. Below is a comparative analysis across several key dimensions to help you make a more suitable decision: I. Advantages and Disadvantages of Earthen Ponds for...
Is Algae Growth in a Fish Pond Good or Bad?
Algae growth in a fish pond has both benefits and risks. The key lies in controlling its growth level. Moderate algae (such as a thin layer covering the bottom of the pond) can absorb harmful substances produced by excess fish waste and uneaten feed, increase oxygen through photosynthesis, and provide...
Dealing with Excessive Hair Algae in Koi Ponds During Early Spring and Late Autumn
Hair algae tend to grow rapidly in spring and autumn due to suitable light and nutrient-poor water. The key to control is shading + biological competition; avoid chemical treatments. Three-Step Approach Emergency Removal: Manually or with tools, clear dense algae clusters, focusing on bottom drains and filter inlets. Quick Shading:...
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Key Management Points for Koi During Winter Dormancy
Feb 07, 2026 -
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Why Can't UV Lamps Kill Parasite Eggs?
Feb 07, 2026 -
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