Why Is Your Aquarium Water Cloudy During Monsoon? Causes & Solutions

Monsoon brings refreshing rains and a drop in temperatures—but for aquarium keepers, it often brings a common concern: cloudy aquarium water. If you've noticed your tank looking hazy or milky during this season, you're not alone. Let’s understand why aquarium water gets cloudy in monsoon and how you can fix it quickly.

What Causes Cloudy Aquarium Water in Monsoon?

Understanding the root cause is the first step to solving the problem. Here are the main reasons your aquarium water becomes cloudy during rainy season:

1. Sudden Weather Changes

The frequent fluctuation in temperature and humidity during monsoons can disrupt the biological balance of your aquarium. This affects bacteria colonies and leads to hazy water.

2. Overfeeding in a Cooler Environment

Fish eat less when the temperature drops, but many aquarists continue feeding the same amount. Uneaten food decays and causes the water to become cloudy and polluted.

3. Power Cuts and Filtration Issues

Monsoon is infamous for frequent electricity cuts. If your filter or air pump stops, waste materials are not properly broken down, leading to murky water.

4. Rise in Organic Waste and Debris

During monsoon, humidity increases, cabinets stay damp, and fungal growth or mould can sneak into the aquarium system, especially if water drips into nearby wood or soil-based aquascapes.

5. Poor Water Change Routine

Aquarists often avoid regular water changes during rains, fearing cold water addition. Skipping routine maintenance adds to waste build-up, resulting in cloudy water.

How to Clear Cloudy Water in Monsoon: Quick Solutions

If you’re facing cloudy aquarium water in monsoon, follow these practical steps:

✔️ 1. Perform a Partial Water Change

Change 20–30% of the tank water using dechlorinated, temperature-matched water. This removes excess waste and refreshes the tank environment.

✔️ 2. Check and Clean Your Filter

Ensure the filter is working efficiently. Clean filter media gently using tank water, not tap water, to preserve beneficial bacteria.

✔️ 3. Reduce Feeding During Monsoon

Feed small quantities and observe your fish. Remove uneaten food within 5–10 minutes to avoid decay.

✔️ 4. Use Activated Carbon or Water Polisher

Adding activated carbon to your filter can help clear impurities. A water polishing filter can also help with mechanical clarity.

✔️ 5. Improve Aeration

Use air stones or backup air pumps during power cuts. Extra oxygen helps beneficial bacteria work better and supports fish health.

Is Cloudy Water Harmful for Fish?

Yes, especially if caused by ammonia or nitrite spikes. It may lead to:

• Stress in fish

• Bacterial infections

• Algae outbreaks

• Reduced oxygen levels

Don’t ignore cloudy water—test your water parameters and act fast.

Cloudy aquarium water in monsoon isn’t just an aesthetic problem—it’s a warning sign. With the right care, observation, and water management, your tank can stay crystal-clear even during the rainiest months.

Visit Blessings Aquarium in Pune

Need expert help to fix your cloudy aquarium? Visit Blessings Aquarium, Viman Nagar, Pune – Maharashtra’s most trusted aquatic gallery. From filters and water test kits to monsoon-safe care products, we have it all.