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Why is my small fish tank cloudy and smelly with too many goldfish?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish

Hi i have a Small fish Tank 1.6 gallon i originally got it for 2 fish a small gold fish and a terra a neighbor gave us 2 more gold fish the water of the tank went real cloudy and has an odor as this is the first time we have fish I'm probably doing something wrong can you please advise

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on May 22nd, 2018

These signs are quite concerning and should be approached radically. Begin by submitting a water sample for quality testing. Most pet stores will do this for free or a nominal fee. Clinical examination should always include a water quality check, even if you have done so already. Water testing should be performed with a quality test kit, measuring NH4, NO2 and NO3. High ammonia levels, PH imbalances may be responsible for these signs. Oxygen concentration and quality of the filters should be determined as well. If water quality is good and there are no major imbalances, your fish should get examined to look for any sign of bacterial/fungal infection and eventually water should be treated. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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