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What to do if Seachem Prime makes your tank water stink

Seachem Prime is a water condition that will remove chlorine and chloramine from your tap water in addition to detoxifying ammonia, nitrites and nitrates. This liquid has a strong sulfur smell that resemble a rotten egg, however.

If the Prime is making your fish tank stink, then you can take a look at this troubleshooting guide to see how you can make the smell go away.

Before we start, it is important to note that it is normal for the Seachem Prime solution to smell. Even if its odor gets stronger over time, the product should still be as effective before as long assuming that its container has been stored properly.

1. For the first solution, you can try adding carbon either to your filter or directly in the tank.

The microscopic pores of this media should be able to absorb the odor from Seachem Prime. Carbon is also great at keeping your tank water clean as well as getting rid of any medication that you were previously dosing.

2. If you don’t have any carbon available, then you can try using something else that may overtake or distract you from the smell.

When we used Prime with Melafix, for instance, the better smelling tea tree extracts help masked the unpleasant odor produced by the water conditioner.

3. If you have some king of air freshener and/or air filter, then you can try placing it close to your fish tank as these may help with eliminating the foul odor from Seachem Prime.

4. You can also try using some air spray or perfume. With that said, make sure that you don’t spray the bottle directly in your fish tank as the chemicals could end up causing harm to your aquatic pets.

5. Of course, you can also try opening the window as the fresh air will help with making the pronounced odor less noticeable.

6. Moreover, you can simply wait for the smell to go away. According to Seachem, Prime will dissipate on its own after around 24 hours.

So, if you don’t mind waiting a day, then the rotten egg odor should no longer be there after 1 day, if not sooner.