Why does my fish tank smell
If you can smell your fish tank in the corner of your house and wonder why and how to fix it, you have come to the right place and this guide will tell you the answer you want! Submersible aquarium water pump
Why Does My Fish Tank Smell Bad?
No one wants a smelly fish tank; A bad fish tank can make your whole room, or even your house, unpleasant; the main cause of your fish tank stinking is bacteria, and it can come from many different sources.
Here are a few common reasons why your fish tank may smell bad and how to solve it with right Aquarium Equipment:
Dead Fish
The most common cause of an unpleasant smell in a tank is the death of one or more fish. In fish tanks, keepers sometimes ignore some of the fish in the tank. If any fish die, they may not find it until two days later.
If the dead fish is not pulled out in time, then the bacteria and fungi in its gut will begin to decompose the poor critter, and the sulfur and ammonia levels will start to spike. If you have smelled it before, you are probably familiar with it.
Overfeeding
A rule of thumb that fish keepers should follow when feeding their fish is to ensure that the food they feed is consumed within two minutes. If you continue to feed the fish after that, you may overfeed. The extra food breaks down at the bottom of the tank and stinks, causing bacteria bloom and making the water smell bad.
Dirty Substrate
If you use sand or gravel as a substrate, leaving it uncleaned for a long time will cause the substrate to become denser and form an oxygen-free space, which encourages the bacterial bloom and makes the water smelly.
Fish Waste
More fish leads to more fish waste, and if you feed the fish more than once, the accumulated fish poop will cause the water in the tank to smell. In this case, an internal Filter Aqua Pump may help.
Rotting plants
Rotting plants are easy to spot. Their leaves are often yellow or black and sticky to the touch. You need to clean it out in time, or it will ruin the whole tank of water.
Dirty filter
The job of the filter is to collect any garbage floating in the aquarium and collect it in one place. Because of this, the filter smells bad. It is really not good! Find some good filter from china aquarium filter supplier is much better option, with competitive price and nice quality.

How to fix the smell?
Before you tackle the unpleasant smell you must find out why your tank stinks. Otherwise it is all in vain.
Step1 Change the water and clean the tank regularly.

As I mentioned in other guides, changing the water in the tank regularly can solve 80 percent of the problems. Or adopt an Internal Filter Aqua Pump can save you a lot of time.
The tank is a closed environment, not changing the water will lead to accumulated bio-waste and by-product that cannot be eliminated and make a mess of the tank. Find some useful Aquarium Equipment to help this is much better.
Step2 Feed the fish less often
After a thorough cleaning of the tank, it is also necessary to reduce the number of times to feed the fish, generally once a day, and ensure that they can eat up within two minutes.
Step3 Change the filter medium
When the filter is working properly, it can effectively adsorb the waste in the water, but when the filter is clogged with waste, it will be surrounded by bacteria.
So the most direct way is to change the medium, which can also ensure that the quality and smell of water are not so bad for a long time.

Final takeaway
If your tank smells bad, it could be caused by several factors, including dead fish, dirty filters, substrate, and rotting plants in the tank.
Experienced owners know how to deal with these problems,by adding many nice fish tank equipment, like Submersible aquarium water pump, small led light for aquarium, aquarium mini air pump and Internal Filter Aqua Pump. And follow the advice I have given above, and it will be very easy to solve