Cougra
Well-Known Member
Well, I've been debating trying out some Purigen in my tanks and have finally purchased some to test. I know this isn't a very scientific experiment since I'm only using regular test kits, have no controls or anything of the sort, but I'm willing to share my observations.
Here is a description of the product from Seachem's own website:
The freshwater tank has been set up for a little over a year now. It is a 48"x18"x21" tank, filtered with an Eheim 2026 power filter and has minimal lighting (2x40W NO florescent tubes). For a bioload it has 2 N. brevis, 3 N. meeli, 8 Paracyprichromis, 3 Danios, 2 N. leleupi and one Ancestrius sp. Before adding the Purigen I tested for:
ammonia - 0ppm
nitrite - 0ppm
nitrates - 15ppm
The saltwater tank has been in operation for a little over 6 years now. It is a 30"x12"x18" tank, filtered with live rock, a sump w/live rock (holds 13gal of water), and live sand. It doesn't have a skimmer on it (the one I had was horrible and I deemed everything was safer without and never got around to replacing it) and has regular weekly water changes of 10 Gallons (~30%) using RO/DI water (1-2ppm TDS readings). I have recently started using a Fluval 204 canister filter for better water flow, as well as more mechanical and chemical filtration. Bioload is very light with 1 clownfish and 1 royal gramma for fish, a few soft corals, snails, one shrimp, and some hermit crabs.
Readings:
SG - 1.025 (measured with a hydrometer)
pH - 7.9 (never could keep it above 8 but it's stable and only fluctuates by 0.1 at most each day)
calcium - 380ppm
alk - 3.2meq/l
ammonia - 0ppm
nitrite - 0ppm
nitrate - 5ppm
In each tank I placed a little more then the recommended amounts and figure that I'm going to need to rejuvenate it again much sooner then recommended since the tanks have been running without if for so long so it'll have more to remove from the water then if the tanks were running for longer periods of time with it in. I placed the media in the canister filters on each tank to ensure good water flow past the media. In both tanks this is the only type of chemical filtration I'm currently using. (I don't use carbon or phosphate removers very often if at all.)
After 48 hours:
I had originally intended to do similar tests on each tank but ran out of nitrate test solution so will only announce test results when I can test for all the same things again at the same time.
In the freshwater tank I noticed that the water is a little clearer when looking through the side of the tank (Can't notice from the front).
However, I noticed a huge difference in my saltwater tank, as the water is much clearer then before. I hadn't noticed that I had a slight yellowing of the water despite the frequent larger water changes until it was gone. Before people jump to any conclusions, keep in mind that I rarely use any type of chemical filtration and the few times I used carbon or poly-filters was because I knew there was something wrong with the tank.
I took pictures of it before use and after 48 hours to see if I could observe any changes in colouration and feel it's doing anything. Here are the photos for comparison (the Purigen is was photographed from the FW tank as it's easier to completely remove however I noticed very similar colour differences with the media in the SW tank as well.)
Here is a description of the product from Seachem's own website:
I have put the recommended amounts in a freshwater tank and in a saltwater tank.Purigen™ is a premium synthetic adsorbent that is unlike any other filtration product. It 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 a rate and capacity that exceeds all others by over 500%. Purigen™ controls ammonia, nitrites and nitrates by removing nitrogenous organic waste that would otherwise release these harmful compounds. Purigen’s™ impact on trace elements is minimal. It significantly raises redox. It polishes water to unparalleled clarity. Purigen™ darkens progressively as it exhausts, and is easily renewed by treating with bleach. Purigen™ is designed for both marine and freshwater use. This product is sold by volume. Cited weight is minimal weight.
The freshwater tank has been set up for a little over a year now. It is a 48"x18"x21" tank, filtered with an Eheim 2026 power filter and has minimal lighting (2x40W NO florescent tubes). For a bioload it has 2 N. brevis, 3 N. meeli, 8 Paracyprichromis, 3 Danios, 2 N. leleupi and one Ancestrius sp. Before adding the Purigen I tested for:
ammonia - 0ppm
nitrite - 0ppm
nitrates - 15ppm
The saltwater tank has been in operation for a little over 6 years now. It is a 30"x12"x18" tank, filtered with live rock, a sump w/live rock (holds 13gal of water), and live sand. It doesn't have a skimmer on it (the one I had was horrible and I deemed everything was safer without and never got around to replacing it) and has regular weekly water changes of 10 Gallons (~30%) using RO/DI water (1-2ppm TDS readings). I have recently started using a Fluval 204 canister filter for better water flow, as well as more mechanical and chemical filtration. Bioload is very light with 1 clownfish and 1 royal gramma for fish, a few soft corals, snails, one shrimp, and some hermit crabs.
Readings:
SG - 1.025 (measured with a hydrometer)
pH - 7.9 (never could keep it above 8 but it's stable and only fluctuates by 0.1 at most each day)
calcium - 380ppm
alk - 3.2meq/l
ammonia - 0ppm
nitrite - 0ppm
nitrate - 5ppm
In each tank I placed a little more then the recommended amounts and figure that I'm going to need to rejuvenate it again much sooner then recommended since the tanks have been running without if for so long so it'll have more to remove from the water then if the tanks were running for longer periods of time with it in. I placed the media in the canister filters on each tank to ensure good water flow past the media. In both tanks this is the only type of chemical filtration I'm currently using. (I don't use carbon or phosphate removers very often if at all.)
After 48 hours:
I had originally intended to do similar tests on each tank but ran out of nitrate test solution so will only announce test results when I can test for all the same things again at the same time.
In the freshwater tank I noticed that the water is a little clearer when looking through the side of the tank (Can't notice from the front).
However, I noticed a huge difference in my saltwater tank, as the water is much clearer then before. I hadn't noticed that I had a slight yellowing of the water despite the frequent larger water changes until it was gone. Before people jump to any conclusions, keep in mind that I rarely use any type of chemical filtration and the few times I used carbon or poly-filters was because I knew there was something wrong with the tank.
I took pictures of it before use and after 48 hours to see if I could observe any changes in colouration and feel it's doing anything. Here are the photos for comparison (the Purigen is was photographed from the FW tank as it's easier to completely remove however I noticed very similar colour differences with the media in the SW tank as well.)