

⚡ Revolutionize your reef care with nature’s fastest cleaner!
DrTim's Aquatics Reef One & Only is a premium nitrifying bacteria solution designed to instantly convert harmful ammonia and nitrites into non-toxic compounds, accelerating the cycling process in reef, nano, and seahorse aquariums. This 100% natural, eco-friendly formula eliminates new tank syndrome without odors or chemicals, backed by marine biology expertise and trusted by both professionals and enthusiasts for maintaining toxin-free, thriving aquatic environments.





| ASIN | B0027J8A72 |
| ASIN | B0027J8A72 |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #143,956 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,279 in Aquarium Water Treatments |
| Brand Name | DrTim's Aquatics |
| Color | Reef & Nano |
| Customer Reviews | 4.4 4.4 out of 5 stars (299) |
| Date First Available | June 8, 2005 |
| Date First Available | June 8, 2005 |
| Directions | Shake well before using. It is best to use the entire contents at one time. Cannot be overdosed. Add directly to the aquaria. Make sure any UV and ozone systems are off for 48 hours after adding. |
| Included Components | Nitrifying Bacteria |
| Item Dimensions LxWxH | 3.1 x 1.5 x 6 inches |
| Item Package Dimensions L x W x H | 5.87 x 3.11 x 1.46 inches |
| Item Weight | 9.6 ounces |
| Item model number | 402 |
| Item model number | 402 |
| Manufacturer | DrTim's Aquatics, LLC |
| Manufacturer | DrTim's Aquatics, LLC |
| Model Name | One & Only REEF-PURE |
| Number of Items | 1 |
| Product Dimensions | 3.1 x 1.5 x 6 inches; 9.6 ounces |
| Specific Uses for Product | Indoor, Outdoor |
| Style | One & Only REEF-PURE |
| Target Audience Keyword | algae-eaters, betta-fish, bottom-feeder-fish, cichlid-fish, fish, goldfish, invertebrate-fish, mollusks, octopuses, rays, sharks, snails |
| Warranty Description | Manufacturer Warranty |
A**R
Fishless cycle with Dr Tim's & ammonium nitrate works!!!
Followed the directions to a T and it worked! 💪 Set up: Recife eco 40 - Carib Sea dry rock and live sand. Ai 16hd, Nero 3 wave maker, and Axis 40 controlable pump. Added after boi cycle 2 clowns, 2 cleaner shrimp. Added a week ago after turning on the lights: a small colony of birdsnest and a plating montipora. So far elementary parameters have stabilized. I've also added algea barn galaxy-pods to help win on any nuisance algea buildup. Will update this post as time goes on.
J**E
Great Product and It Really Works
From starts to 4-5 months I am using this one and Vibrant to prevent bad algae bloom and red cyano. And it works and never gone in really bad phase of a new syndrome tank.
C**S
Works great
Cycles tank quickly if directions are followed
I**E
Seems to have done what it said it does.
Cycled a 120g tank with Caribsea Hawaiian Sand, media balls (the ceramic ones) and dry man-made liverock. Used the ammonia by the same brand to get up to about 4ppm. By day 2 I had a massive nitrite spike and Ammonia was just trace. Added more ammonia day 3 to get to 2ppm. Added microbacter7 on day 3 as well. Nitrite spike did last about 5 days reading off the charts before it went to 0. Refugium was up and running when the Nitrites became readable (API test). I’m about 10 days in and am running at 0 ammonia, 0 nitrite, and about 10-20 nitrate.” With Chaeto growing nicely. I normally cycle tanks with gulf live rock and it takes about 4-5 days to get a stable tank setup. I’ve never really had the ups and downs of new tank syndrome. Will be interesting to see if I get the hair/bacteria/cyano blooms over the next few months.
S**E
Simply not worth it.
As far as I can tell this stuff is garbage. I’m four days into what will supposedly be a 1 week cycle time and after using this stuff mixed with Dr Tim’s ammonia all I have is a tank with high ammonia and no nitrites. I followed all the directions as closely as possible removed filter media etc. and yet there’s no indication a cycle has begun. At this point when the cycle finally does start I won’t even be able to attribute it to this product since these cycles begin on their own without these additives. Based on my experience so far and the lack of help from their Facebook page (mostly tried to come up with excuses and blame me) I won’t be buying another Dr Tim’s product.
A**R
USED COUNTLESS NOW RESULTS LIKE THIS!!!
I used a bunch of different products for aquarium startup to create the bacteria. Bunch of fish loss over $400 in fish loss. No other product ever really worked. I put this product in within two weeks. I had a fully running fish tank with multiple different fish this is the best product on the market when it comes to starting a fish tank.
P**L
It works well!
So far it seems to get the job done. Worked well for my 91 gallon red sea reefer 350. Got things started pretty fast. Was able to add fish in a week!
D**S
Cycling tank
Used this to cycle my 104 gallon Saltwater tank Worked perfectly; would highly recommend, worked as described. I used the whole bottle.
M**K
Nothing better than this product.
G**T
Good
M**D
Do what it says on the bottle and you can't go wrong,I'm very happy i chose Dr tims
N**A
It didn't work as fast as advertised! I followed their youtube instructions and Ammonia wasn't going down! I had to use a different product to stabilize the tank!
O**4
I bought this to cycle a new 255 litre reef tank. The instructions were very clear and there are a couple of very useful videos on line. I followed the instructions to the letter in terms of dosing and testing and the cycle happened just as should, going through the various stages. Personally I much prefer to use something like this rather than use a live fish which would likely be stressed by the poor water quality during the cycle. One concern I did have was that if you followed the instructions fully it states that the tank would be ready for fish after 9 days. This certainly wasn’t the case and it wasn’t until day 15 the the nitrate levels had fallen to zero making the tank fully cycled. I would suggest not following the 9 day suggestion but relying on the results from ammonia, nitrite and nitrate tests. However I was still happy with a 15 day cycle so would use this again if I ever start a new tank.