Purigen vs Phosguard

Fish is a very delicate animals in general and they can easily get sick or even die if not taken care of properly, especially how we condition the tank or aquarium. Since animal make wastes, it is necessary to clean their water routinely with certain filters like Purigen Vs Phosguard. Both of them are very useful and convenient but also different which is why before picking one of them go check how they differ from each other first here so then we can shop better.

In this article, we are going to give you information about:

  • How to Clean the Aquarium
  • What are Purigen and Phosguard
  • What Purigen and Phosguard Look Like
  • What Purigen and Phosguard are used for
  • How are the Performance of Purigen and Phosguard
  • What else Purigen and Phosguard can offer
  • Purigen Vs Phosguard

Cleaning Aquarium

Having a pet at home is great because they can be our friend and while people have different preferences, our duty as the owner stay the same. We are required to take care of their wellbeing and it is not just providing the food or water to consume but also keeping them healthy. If you have a dog or cat, routine grooming is necessary but if you have a pet fish, their living space or tank needs to be cleaned as well.

Fish just like any animals will create wastes and since the space in which they live is narrower than their natural habitat, it can’t clean itself thus, we have to do the cleaning process every now and then. The most ideal routine is cleaning a little bit everyday so we don’t have to do massive clean later.

  1. First step of cleaning the aquarium or fish tank is the glass itself by using scraper to help removing the algae more effectively. We can use those with long handle or those with magnetic feature. In case there is stubborn residue, use a razor blade to clean them off.
  2. If your fish tank or aquarium has decorations, pull them including artificial plants but prevent using soap because they are hard to clean and can be harmful to your fish. For those with stubborn dirt, use 10% bleach solution and soak the items for about 15 minutes then scrub the remaining residue.
  3. Use siphon to clean the gravel in your fish tank because it can stir up the debris without sucking them up. After the water is removed along with the debris, replace it with dechlorinated water to give a water change but, make sure to use the same temperature water.
  4. When the aquarium is clean from the inside and outside, now is the time to clean the rest of the items including the hood, light, tank top, and outside glass. It is recommended to use vinegar to be safer while don’t forget to wipe the surface with a clean damp cloth as well.
  5. The last step is cleaning the filter but, this should be done a couple of weeks later because there are many beneficial bacteria in your filter and since we have removed those in the inside of the aquarium, at least we can save those in the filter so we don’t fully wiped the ecosystem. If you clean the filter right after, there might be ammonia spikes because there is not enough beneficial bacteria left to eliminate the toxins.

About Purigen and Phosguard

To make sure we don’t need to do a complete cleaning like this often, it is best to just perform them every now and then and depending on how many animals living inside, our frequency of dealing with this cleaning process will vary as well. If you are looking for a method to make sure the water is always clean and lessen the burden of frequent cleaning, using certain filter will be a great decision to take especially if you have many tanks to take care.

To keep the water clean you will use some type of filtration and if organic waste is what you are aiming to take care of, Seachem will have various treatments to offer. They are very popular with few different types of mechanical filters that works wonderful in your aquarium but also affordable especially in the long term. Two different filters you can pick are the Purigen and Phosguard resin filter. Both of them are very similar yet also different.

Filters are in general available in either ion exchangers called as water softener or water refiner which is more powerful because it can complete all four steps of water cleaning to give a properly cleaner water rather than just exchanging the ion with cation resin and anion resin. The promise of these Purigen and Phosguard are also different because one is an organic cleaning while the latter are meant to be used for phosphate and silicate so in terms of function they are very different.

However, both of them are serving an equally important purpose since there are many substances that need to be removed or cleaned from the aquarium or fish tank so it all depends on your choice. In general we can use both of them to deal with both nitrogenous and silicates or phosphate in the aquarium. Price wise they are affordable but in comparison the latter is cheaper than the one we use to clean the nitrogenous organic material. Read also: Dogtra 200C Vs 280C.

Purigen and Phosguard Packages 

Both of Purigen and Phosguard are readily available in a few different sizes to try and as an example the one we show above is their 500ml version. If you are looking for a more convenient package, there is the 100ml version which comes in a plastic package with a mesh pocket inside so we don’t have to use or put the beads manually. This 100ml version can be used up to 100 gallons of water but the dosage will be different between these two so follow the instructions in their package before using the beads.

If you are picking the canister size, these beads are meant to be put in a certain type of cloth or filter material then placed in your canister filter. The 100ml version has the ready to use beads inside and you will find a packet inside measured at least 4 and half an inch filled with very small beads that work as a cleaning agent. These beads are very small that it is hard to notice how the surface or texture look like without a magnifier.

Purigen and Phosguard Purpose

As it has been mentioned above, the main difference between both of them is their function because Purigen is meant to clean the nitrogenous organic material which is produced by your fish and other aquarium inhabitants that will turn your water murkier over time. The promise however is it can clean very effectively till the fish looking like swimming on air but, it is better to take this claim with a grain of salt. On the other hand Phosguard is meant to be used for phosphate and silicates.

Both of these substances are always present in your fish tank or aquarium. Phosphates comes from the wastes that are broken down within the aquarium and it can also come from the outside, such as from fish foods and the chemicals used to buffer the water to tap water. Silicates usually present in a newly setup aquarium due to inadequate light, excess silicates, and abundance of nutrients with inadequate oxygen. However, it can build up from tap water as well.

Purigen and Phosguard Performance

Moving further, let’s see the performance because it is the most important and starting with Purigen, while we don’t see the promise of very clear water which makes your fish looks like swimming in air, this beads really do the job in clearing the murky water within days. The only problem is that if you have smaller filter, fitting the bag inside can get a little messy and harm the water flow for the filter bag needs to be submerged to work.

The same good performance is also experienced with the Phosguard because this filter is equally great especially if you are dealing with algae or red slime which seems to build up in your tank. What you need to keep in mind is don’t use a higher dose because it may kill your macroalgae. It is very effective that 55 gallon of water with high phosphate can be handled and reduce to the very lowest just in a mere 3 days.

Purigen and Phosguard Feature

On the additional benefit side, there is one feature that is not coming with Phosguard but is possible with Purigen and it is how we can reuse the beads just by cleaning them. This method is also called as recharging the filter and to do so we should rinse the beads using filter bag with 1:1 bleach water solution for 24 hours in a non-metallic container then soak for 8 hours with a solution containing 3 tablespoon of dechlorinator per cup of water then rinse well.

Purigen vs Phosguard

- FILTRATION: Seachem Purigen is not a mixture of ion exchangers or adsorbents, but a unique macro-porous synthetic polymer that removes soluble and insoluble impurities from water at an excelled rate and capacity.
- SELECTIVITY: Seachem Purigen is an organic filtration resin that works hard to remove nitrogenous compounds and waste produced by fish, corals, and even plants, making your water crystal clear.
- CAPACITY: Being both spherical and macroreticular, Seachem Purigen has microscopic pores that increase its usable surface area to many times that of a purely spherical resin.
- REGENERATION: Once Seachem’s Purigen is exhausted, it can be regenerated with a solution of bleach and water. The bleach will literally “burn off” the organics that have been removed from the tank.
- PhosGuard™ should be rinsed before use and placed so as to maximize the flow of water through it but not so that it tumbles against itself in flow.
- It may be used in a canister filter, media chamber, box filter, or any high flow area of a trickle filter.
- It is not recommended for phosphate buffered freshwater. PhosGuard™ is highly porous for high capacity and bead-shaped for optimum water flow.
- Performance driven at affordable prices, Made in the USA with quality materials, Field tested to ensure nothing but the best for your pet

Both of these resin filters are very useful but they are meant to clean different problems inside your fish tank or aquarium. The Purigen is used for eliminating ammonia, nitrites and nitrates by removing nitrogenous organic waste while Phosguard is working against silicates and phosphate that results in growing algae in your water. In addition, only Purigen can be reused to save cost for the long term.


All in all, it is best to purchase based on your needs because these filters are meant for different purposes. If nitrogenous materials is the concern the Purigen is your answer but if algae is your concern then Phosguard is the option.