Bryopsis Treatment - Per Gallon (20mg)

CAD $0.35
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Bryopsis Treatment - Per Gallon (20mg)

By purchasing a quantity of 1 (one) you are buying 20mg of Bryopsis Treatment that will treat 1 gallon of aquarium system volume. 

If your system is 37 gallons total, then you need to purchase a quantity of 37 of this product

If your system is 100 gallons total, then you need to purchase a quantity of 100 of this product

The Bryopsis Treatment will come pre measured and packaged in the quantity you order ready to be dissolved and added to the system. no measuring required on your part. If you are ordering multiple doses or for multiple systems please indicate in the order comments upon checkout the total number of gallons per package.

If your system is 100 gallons total, and you want 2 doses you need to purchase 200 of this product and in the comments section of the order checkout please indicate "Package in 2 x 100g doses"


Frequently Asked Questions (FAQs)

****This treatment seems to work best in well lit areas of the tank. Some people are noticing quicker results by adding light to the shaded areas of their tank.*****

Q: Will this treatment kill Bryopsis?
A: YES. This treatment will kill Bryopsis. There have been a couple of strains that seems to take longer to kill but if you have Bryopsis, it will kill it. It has also killed most forms of GHA although GHA takes longer to kill. Some tanks have needed another treatment to kill all of the GHA. Keep in mind that GHA can/will return in your system over time as you perform water changes and remove the treatment. GHA shows up any time the conditions are right for its growth. This does not mean the treatment didn't work, only that the conditions were right for its return. Bryopsis however won't return in your system unless you didn't kill all of the Bryopsis cells during treatment or you reintroduce it into your tank through frags etc.

Q: How does this treatment work?
A: This Treatment blocks the enzymatic pathway for the production of ergosterol. Ergosterol is essential for maintaining the cell wall integrity of plants. Ergosterol (ergosta-5,7,22-trien-3β-ol) is a sterol found in cell membranes of fungi and protozoa, serving many of the same functions that cholesterol serves in animal cells.

Q: Will this treatment kill anything else in my system?
A: So far it has not killed anything other than bryopsis and GHA. Everything and I mean EVERYTHING else is unaffected.

Q: Do I do a water change before treatment?
A: Yes. It would be a good idea as the treatment is for 14 days and its normal to expect an increase in NO3.

Q: How do I prepare the the treatment?
A: Pour the contents out into a glass of RODI water or tank water. The amount of water doesnt matter, but make it enough to be able to mix the med up. Pour some water in and out of the pouch to rinse it all into the glass. The med isnt very soluble, but mix it up best you can. Preferably dose at night when fish are asleep. Then pour the entire dose into the DT, or sump. Some have put it into their sump socks. We dose directly into the DT.

Q: How long is the treatment?
 days. Maybe up to 21 days if you still have GHA present in the tank. Longer treatments have been run without any problems so if you want to continue your treatment past the 3 weeks it will be fine.

Q: Do I remove my carbon?
A: Yes.

Q: Do I remove my skimmer cup?
A: Yes. Its suggested for at least the first few days if not the entire treatment, to remove your cup. If you remove your cup you may continue to run the skimmer, or turn the skimmer down as to not allow the skimmate to enter the cup. You do not want to remove the medication.

Q: Do I take my ATS (Algea Turf Scrubber) offline?
A: Yes. Completely sanitize it, and reintroduce it after all the bryopsis is 100% gone.

Q: Do I take my bio reactor offline?
A: No.

Q: Do I take my GFO offline?
A: No GFO will not remove the meds. It will also help to remove the PO4 from dying algae.

Q: Do I continue to dose H2O2?
A: Yes. It will not interact with this med.

Q: Do I continue to dose color elements, alk, calcium, and magnesium?
A: Yes.

Q: Should I change or reduce my lighting?
A: No.

Q: If I take my carbon reactor, or any other equipment off line/out of the tank, do I just put them back into the system after treatment?
A: No. Do not reintroduce the algae. It would be best to sterilize any equipment and throw away old media for reactors.

Q: Is it ok to take out my chaeto, or other algae's then put back after treatment?
A: No. this may reintroduce the algae. Leave the macros in the tank.

Q:Should I stop using Purigen during treatment?

Q: Do I take my UV Sterilizer offline?
A: No. At first it was thought that the UV would break down the meds but further testing has shown that it doesn't seem to effect the treatment enough to remove it.

Q: Do I do a Water Change during treatment?
A: No. Unless it cannot be avoided and a WC needs to be done to save life. If you do preform a water change the the medication will need to be redosed and treatment time restarted.

Q: Will this treatment kill my chaetomorpha or other beneficial maco's?
A: Some users have reported some macro algae loss during the treatment but most have not.We are not seeing any wide spread death in macros so it's more of a judgement call on your part.

Q: What other nuisance algae's will be killed by this treatment?
A: This treatment kills the green algae Derbesia also known as GHA. It seems that GHA takes longer to kill than the bryopsis but it still dies. It does not kill Bubble algae. 

Q: When do I do a WC?
A: At the end of the full 14 day treatment. After treatment has completed you will go back to your normal running system. Do a WC as your NO3/PO4 levels may be high from a lot of dead algae. At this time you can assess if a second dose will be required to kill off any algae that has managed to survive the treatment.


  • 5
    Great solution for Bryopsis

    Posted by Jeffrey Puncher on 2023 Mar 9th

    I had a breakout of bryopsis in my two display tanks that nothing would touch. I placed an order for my 70g and 32g and it arrived very quickly and after only a couple of days in the tank, you can see it already starting to work. Great Product!

  • 5
    Traitement pour GHA

    Posted by Real Rioux on 2023 Feb 17th

    Après seulement 5 jours de traitement, environ 90 % du GHA a disparu et les coraux (LPS en majorité) sont top shape

  • 5
    Works great

    Posted by jason walker on 2023 Jan 20th

    Awesome product, works amazing and is delivered really fast. Only problem I had was I wrote in the notes that it was suppose to be 2 doses, but it showed up in one package.

  • 5

    Posted by Jim on 2022 Dec 8th

    It works, I had lots of bryopsis, it managed to take 99% of the bryopsis out, dosing a second time to make sure. Must have for a bryopsis fix

  • 5
    Works great

    Posted by amy on 2022 Aug 13th

    Hasn’t even been 2 weeks since treatment and 95% of the Bryopsis has turned white and is disappearing!! Excellent product.

  • 5
    Works well, even on bubble algae

    Posted by Mark Peltier on 2021 Jul 23rd

    I did not have Byprosis but I did have an out of control issue with bubble algae with a little hair algae. I removed as much as possible through a water change and manual removal. I dosed this according to instructions. After a water change I did see some burst bubble shells. No future bubbles formed after dosing this. I am only 1 tank, but this did help stop the growth of new bubble algae as well as helped with the little bit of hair algae I had. I will be getting another round to have on hand for sure.

  • 5
    Bryopsys Treatment

    Posted by Gord Breckenridge on 2021 Jul 3rd

    Great service, got the product in BC in 2 days and it worked perfectly. Dosed my tank 4 days ago and the algae is almost gone!!!

  • 5

    Posted by Jim McAsey on 2021 Jan 12th

    I was sceptical about this product but as a last resort decided to give it a shot. It worked in less than a week, half the prescribed time. Very happy the tank looks so much better

  • 5

    Posted by Tim on 2020 Dec 15th

    Works well! GHA and Bryopsis is melting away.

  • 5
    super happy

    Posted by robert on 2019 Mar 27th

    Fantastic product. worked within a week!

  • 5
    Worked like a charm

    Posted by S.Simpson on 2019 Mar 19th

    Used as directed and within the two weeks, the tank was bryopsis free. I see no effects on anything else, fish or coral in the tank. Was skeptical at first because for a few days it was like nothing was happening, then before you knew it, the next day the bryopsis was fading and fading fast.

  • 5
    No more GHA

    Posted by Eric on 2019 Mar 12th

    After a week of treatment in my 140g all GHA are retroceding and/or completely dead. Zero other effects on corals or inverts. Will wait untill 14 days and if not enough will dose again after a WC. I recommend Fluconazole treatment. Super easy and very effective!