A Detailed Guide On How To Use Purigen In A Canister Filter

As we all know, aquatic inhabitants, including live plants, discharge nitrogenous toxins into the tank water. These toxins need to be removed for everything to work correctly, and that’s when Purigen comes in handy.

Purigen is a synthetic polymer that efficiently controls ammonia, nitrates, nitrites, and other toxic substances that accumulate in aquariums.

Today, we will discuss “How to use Purigen in a canister filter” and much more. So if you are interested in this topic, let’s scroll down to see more!

How to Use Purigen in a Canister Filter?

Purigen absorb nitrogenous toxins

Purigen can absorb nitrogenous toxins at a fast rate

Canister filters are one of the most efficient filters for aquariums thanks to their amazing cleaning capacity utilizing various filter media types. Here’s how to use Purigen in this filter system.

The canister filter is available in plenty of forms related to design and function. So the application of Purigen in this system may vary depending on the type.

While using it in this filter, ensure that you set it to the top. That way, it will be the previous filter medium via which the water returns to your aquarium.

The amount of Purigen that you need to use will depend on the quantity of your tank water. But avoid overfilling the bag with this synthetic polymer.

Different-sized fine-mesh bags are available, and you can accommodate them accordingly to fit in your filter.

How to Utilize Purigen in The Internal Filter?

This filter is too tiny for Purigen to perform well.

Also, this filter is likely to deliver weak water current, which will not be as helpful to let it achieve as it does with the Canister and HOB filters.

But, Purigen can still be utilized in the internal filter fairly impressively.

Its usage is concerning. It can be knotted above internal filters in their little bag. But until the end, Purigen works best for canister and HOB filters.

When And How Often to Utilize Purigen?

For new setups, the proper time to introduce or insert Purigen is when your aquarium has been cycled and you have installed a bio-filter already.

Introducing it in your new setup might stall your tank from having cycled aptly.

It doesn’t completely stop your tank from an aquarium, but it makes a difference. You need to know two things when using it while your tank is getting cycled.

Firstly, it cannot impact the cycle as long as your tank does not have fish. But if fish is present in your tank, Purigen should remove some organic compounds (DOC), which are considered to deliver nitrogenous compounds upon decay.

So it means Purigen will not get rid of nitrogenous compounds. Instead, it’ll remove the thing that produces them.

You should insert Purigen in your aquarium to keep build-up waste under control when the tank is already running and has finished the cycling process.

How to Utilize Purigen in The Hob Filter?

The HOB filter typically features three-stage filtration. It’s stuffed in order: Sponge, Carbon, and Biomax.

As a general rule, Purigen is the last filter through which the tank water goes before returning to your tank. So, sacrificing carbon is necessary if you want to introduce Purigen to the filter system.

Then the new order you will receive is Sponge, Biomax, and Purigen. It is okay to put Purigen adjacent to Biomax. But we recommend placing it following Biomax.


Can Purigen Harm My Plant And Fish?

Freshwater aquarium

Purigen is safe for plants and fish in your aquarium

The answer is No. It is safe for plants and fish in your aquarium.

Purigen will absorb organics that contribute to nitrate levels, but it won’t cause nitrate levels to drop from low to affect your live plants.

So your plants will still access the required amounts of macronutrients.

Will Purigen Impact the Hardness of the Tank Water?

It should depend on some factors. But in general, a new Purigen package can’t lower the tank water’s pH level, but poorly buffered Purigen can.

Are There Alternatives for Purigen?

There are some alternatives like carbon. Carbon is one chemical filter media and cannot get rid of protein or organics that synthetic polymer filter media could.

Is It Okay To Put So Much Purigen Into My Filter?

Using too much Purigen into the filter has no adverse impact on the tank water. But you should use it in the proper amount to avoid wasting it.

How Long Does Purigen Often Last?

It will depend on the level of waste your aquatic residents produce.

For fully stocked tanks, the bag of Purigen usually requires regeneration every month. Yet, if your tank is clean and less dense, it can work well from four to six months without regeneration.

Where & How should I place the Purigen?

Purigen is versatile and can work with any filter, including internal, external, Sump, HOB, and Canister filters.

While applying Purigen, remember that it should be in an area with a strong water flow. So it would be the last filter part where the water tank passes before returning to your tank.

Can Purigen Remove Nitrite, Nitrate, Ammonia, and Phosphate?

It cannot directly remove nitrite, nitrate, and ammonia. Instead, it removes organic compounds that will decompose and release them. Purigen does not get rid of phosphate, meaning your plants still get enough micronutrients.

Wrapping It Up

Purigen can free your tank water from toxic substances and makes the water clear by removing all cloudy discolorations and pollutants in the tank water.

Hopefully, your questions and confusion regarding using Purigen will be solved by our post. Please leave a comment if you have any other queries.

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