Coralline Algae in a Bottle + Nitrifying Bacteria for Saltwater Aquariums, Pink Fusion Strain
Condition: New
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Availability:
12 left in stock
Arrives
Saturday, Nov 7
At a glance
- Condition
- New
- Weight
- 14 oz
- Liquid Volume
- 50 gal
- Item Form
- Liquid
- Pet Type
- Fish
Features 5
- Unique 2 in 1 Formula Contains Both Live Coralline Algae & Active Nitrifying Bacteria.
- Creates a Balanced Environment by Introducing Multiple Strains and Color Variations of Coralline Algae
- Contains Highly Epiphytic Coralline Stains to Outcompete Nuisance Algae and Diatoms.
- Helps to Rapidly Establish Your Saltwater Aquariums Biological Filtration and Boosts your Tanks Cycle
- Use When Stating an Aquarium, Adding Rock or Sand, or to increase the Color and Diversity of Existing Live Rock
Description
Contains 7 species of Coralline Algae (pink, creamy light pink, fuschia, hot pink, lavender, and magenta). Species of coralline do slightly shift colors depending on their environment especially with differences in lighting and magnesium levels but these species of coralline will generally stay within these shades of pink. Developed in a laboratory and contains actual live algae spores. Other products are simply a mixture of calcium and magnesium. Will also aid in establishing your tanks biological filtration, by providing fresh living bacteria. Our Pink Fusion algae strains are highly epiphytic stains that will help to outcompete other nuisance algae and diatoms. Effective in improving water quality by controlling ammonia and nitrite levels. Reef safe for all marine fish and corals and our holding tanks are 100% fishless so there is no chance of parasites. This is a live product and must be used by the date printed in the bottle. Every bottle is bottled fresh on the date that it ships and has a 21 day shelf life. For Saltwater Use Only. 1 Bottle Treats up to 50 Gallons. Developed and manufactured by ARC, a licensed aquaculture laboratory permitted and licensed under the National Oceanic and Atmospheric Administration, the Department of Agriculture, and the Florida Fish and Wildlife Conservation Commission. 1 Bottle per each 50 gallons of tank volume (including sump) is needed for best results. You can combine both products to give you a total of 14 species. Please ensure to read the included directions and tips before use.
Specs 12
| Brand | ARC Reef |
|---|---|
| Liquid Volume | 50 gallons |
| Item Weight | 14 ounces |
| Item Form | Liquid |
| Number of Packs | 1 |
| Manufacturer | ARC Reef |
| Brand Name | ARC Reef |
| Unit Count | 1 Count |
| Number of Items | 1 |
| Global Trade Identification Number | 19 |
| Pet Type | Fish |
| Target Species | Fish |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Nov 7
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Highly Recommend
Great product and FANTASTIC company!
Reviewed in the United States on July 22, 2026 by Amazon Customer
Let it grow...
So I ordered this product with fingers crossed for some positive results. Got home and it was crammed into the mailbox which was unexpected since it was ordered with Prime and considered a "live" algae. Opened up the packaging and the bottles were wrapped nicely in some quality bubble wrap and the packaging was in perfect condition... seen there were no ice packs or anything, and noticed that the bottles were noticieably warm to the touch. Im assuming its from sitting inside a metal mailbox all day in the sun. So I start reading the instructions and it says that it doesnt do well in cold so am relieved a little bit. I follow the directions for adding to the aquarium and in the middle of the stepss it says to use the enclosed brush to scrape the insides of the bottle and loosen the spores from the sides. Unfortunately there was to brush for either purple or pink bottle. I had a tooth brush on hand that i use to clean coral plugs though so used that. I had some concerns with the temperature and being alive, and no brush being included, but will just have to wait and see. This is one of those aquarium products that take time to work, so no instant results. If product does well I will update the review accordingly.
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Reviewed in the United States on August 14, 2020 by Dennis Roach
Visible signs in 4 weeks!
I’m pretty sure my results aren’t the norm, but I have many growing spots after only 4 weeks. Many spots! I added this bottle as soon as I was past the initial cycle of the tank. My diatom bloom isn’t even over and I noticed that some spots weren’t rubbing off the glass… As I gave the spots a closer look, there were a lot of them all over the glass. Sure enough, they’re the good stuff… and they’re growing. I’ll be breaking out the razor blade to remove them from the front glass very soon. I will note this: I have kept my parameters very constant and stable since day one, via water changes. Alk @ 8 dkh, Ca @ 350, Mag @ 1050, pH @ 8.2, salinity @ 1.024. I don’t keep my parameters on point for the coralline, but rather it’s just an easy and good practice. Super easy with just weekly 10% water changes for a new tank. But like the instructions say…. You gotta have stability for coralline to thrive, just like with corals. I’d almost be willing to bet that all of the negative reviews are due to the owner not keeping healthy and stable parameters. It’s not a miracle bottle after all, just the spores you need from multiple strains. Treat it right, it’ll grow. PS. No other form of coralline has been introduced to my tank. I used completely dry rock, all new equipment, and I haven’t even introduced a cleaning crew yet, so no snails or hermits bringing it in. I’m pretty sure it didn’t hitchhike in on the pair of clownfish! 😂 This is the whole reason I purchased it to start with… because it was going to be the only way to introduce it for a while, plus I wanted pink!
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Reviewed in the United States on February 6, 2024 by Kevin Hartley
Disappointed in Algae Growth
I followed the directions carefully and had high hopes for this product. I did notice a little pink early on, which I thought was coralline algae starting to grow, but after six months, there’s been no real progress. Not sure what went wrong, but it just didn’t seem to take in my tank. The idea is great, and maybe it works better in different times of the year (I purchased in January).
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Reviewed in the United States on July 10, 2025 by tiffo722
Live coralline algae
I have purchased 3 bottles of this over the past 2 years both pink and purple. The first two I purchased i never saw any results. The third bottle I purchased I saw results within 6 weeks of adding to my tank. It started on the bottom of tank (bare bottom) and the plastic of a submersible pump. It literally grows like mushrooms, one day nothing, the next there’s 15 spots of it out of nowhere. I’d like to add I have never had luck growing coralline with led lights, specifically the AI prime HD. When I had t5s coralline was a literal nuisance but when I got a different tank and switched to the LEDs never had any. So of course when you don’t have something now you want it. I decided I was going to move my tank right in front of a floor to ceiling Southwest exposed window and downgrade to cheap led lights and let the sun do most of the work. Now this location is perfect because a tree outside in summer provides dappled shade so the tank won’t overheat put provides extremely bright light in winter when the sun is lower and weaker. This is a Euphyllia only tank (and a few zoas and green star polyps that I thought I removed but guess not good enough)🤣. Amazing growth and I finally have my coralline back although I may soon regret that when I’m scraping it off the glass every week. So I’m only giving it 4 stars because how do I really know the coralline came from this bottle? I really don’t. I have a snail that has it on it and he has been in the tank since set up in its new location 5 months ago. That being said I did add this 6 weeks ago and the coralline showed up within the time frame specified on the bottle. I personally do believe it was the bottle but have no way of proving it. I’d also like to add my tank was going for near 4 months before I added the bottle, my dry rock has been in constant use for over 3 years with corals already on it. Also had low nitrate levels (<5) and the proper Mg,alk, and calcium levels needed to grow coralline. I don’t think it’s wise to add the bottle to a newly set up tank where parameters are fluctuating and the tank hasn’t gone through all it’s ugly algae and cyanobacteria stages, probably just be wasting your money.
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Reviewed in the United States on May 21, 2020 by Klaus Von Beaverhausen
Did not work
Waste of money, did not work
Reviewed in the United States on August 16, 2026 by CINDY Reed
It worked well quick with good conditions provided
Added to my aquarium approx 14 days after receiving due to needing to lower nitrates. It is not even a month later (3weeks) and there is now good signs this worked well. I have noticed many pink dots and green hard algae on old brown rock as well of some of the whiter rubble rock work in the tank. Now seeing the green hard algae all over also, great sign that it will all be pink soon enough. Worth the wait for sure. I do have purple painted rocks in the pictures but the big holey brown one had no previous color after it being in tank for a year or more and same with the rubble on top of the encrusted rock. Also a spot growing on silicone/glass in corner. Hoping it will knock out the diatoms/brown algae if it takes hold well. I did have one rock over the past year with good corilline already but it never spread and was only a few speckles for the longest. For some reason adding this accelerated its growth as well in my opinion. That is the rock holding the rubble pile.
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Reviewed in the United States on December 7, 2020 by Ashly MCCall
The best way to add coraline to your tank.
I add I added the pink helix to my Tank 4 weeks ago. The instructions said to expect it to take 4 -8 weeks but I noticed within 2 weeks multi colored pink pockmarks on my rocks. 2 weeks later this pockmarks had tripled in size and I'm seeing variations of pink from dark pinks to almost whitish pink. I am very impressed with the quality of this product Arc Reef not only delivered with what they said, but I feel they went above and beyond. There were multiple large chunks of rock in the bottom of my bottle with multiple colors of coralline Algae. I followed their instructions and adjusted my lights to more of a blue spectrum. And now I have noticed even more coralline algae growing. I have even started seeing it growing on my snails and hermit crabs. I will from now on be using Arc Reef products whenever I need to seed a tank. I have a 30 gallon reef I added one bottle of pink helix and I think I'm gonna get a bottle of purple helix to go along with it. If you want to seed your tank and get fast results definitely uses this product. I've used others in the past with varying results But none have ever been as good as Ark Reefs. I'm a customer for life.
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Reviewed in the United States on August 8, 2018 by Brandon