DrTim's Aquatics One and Only Saltwater (DrTim's Aquatics One and Only Saltwater 64oz)

Cycled tank faster

Excellent product!

I used this with the Dr tims ammonia to cycle my tank, it cycled in about a week. I had dry rock in my tank with live sand and it cycled very quickly, i have also been using it when i add new fish to the tank as a precaution and have not had anything but 0 ammonia, 0 nitrites and very low nitrates while using this. I know you can use this and add a fish or two immediately in bigger tanks (>75 gallons) and you can probably do it with one fish in smaller tanks but after researching a lot, i used the ammonia in my nuvo 38 just to be safe, after i cycled the tank i added 3 tiny Blue/Green Chromis with another half bottle just to be safe and saw NO change in my water parameters. The stuff works! My degree is in Biology specifically micro biology and I went to a school that has a big fish health biology program so a lot of my classes were related to fish, after researching Dr Tims and reading his actual peer reviewed research on the website and based on my own experience with it, I would HIGHLY recommend this if you are using dry rock when starting a tank. Also, i have yet to have a diatom bloom in this tank, which is a huge bonus. I had read from other reviewers that they didn't have the bloom and i didn't believe it. The biggest thing though is read the directions and follow them!

Is all it took to cycle my 30 gallon tank. Used api saltwater kit for measurement

Dr Tims is the best for starting new tanks

This product should be a recommended add on for any new live rock or live sand purchase. 48 hours later, bam! Algae is under control.

It simply did not work at all. I setup my new 75g with 20g sump verified the temp was stable at 77.5 degrees. All the water parameters were perfect for adding this product. I double checked and the salinity at 1.21, Alk 9.8, PH 8.2, Cal, 400, Mg 1300. Both the rock and substrate were inert and had no organics on them. I followed the directions on the bottle and added the entire bottle to the main display and even rinsed it with tank water to make sure I got it all in there. I then added the correct number of drops of Dr. Tim's Ammonium Chloride and left the tank to do it's thing. I started checking the ammonia and nitrite levels after 24 hours. Ammonia was at 3.0 and nitrite and nitrate both reading zero. Over the next several days The ammonia continued to climb to 5.0, but both the nitrite and nitrates still remained at zero. On day 5 the water chemistry was still the same. Absolutely no change in the ammonia levels. Clearly something was wrong so I checked the bottle expiration date and it still had over two years left on its shelf life. I ended up going to my LFS and picked up a bottle from a competing vendor and dosed the tank with it. I checked the numbers 24 hours after dosing with the competition and the ammonia had fallen by half to 2.0-3.0. I was also now seeing nitrites at 2.0. after 72 hours of dosing with the competition the ammonia is now at zero, nitrites at 4.0 and nitrates at 20. So after five days with Dr. Tim's, I got absolutely no results other than a higher ammonia level. Within 24 hours of adding a competing product I was already seeing results. So just be aware that while many rave about One and Only, for me it's not worth the money. I ultimately had to go back to the product I have used in the past to start my SW tanks to get results.

I don't think it works as well as claimed, however it certainly does offer a noticeable boost to the cycle. I cycled a 38 gallon marine aquarium with this product. The tank has an oversized canister with Matrix in it and lots of live rock and sand. Put it in the tank in Tuesday and did the fishless cycle instructions with their ammonia. The following Friday (11 days) I was leaving for vacation and ammonia readings were still high after not adding any for several days. Added a small bottle of Fluval bacteria (a little variety can't hurt right?) and left for vacation. Arrived back the next Saturday, so just short of three weeks, to perfect 0 ammonia and nitrite levels and expected nitrates. Did a water change and added two clowns, away we go. To me, the double hit of bacteria made a speedy less than 3 week cycle, so the investment is worth it. I think the old way I have done usually takes at least 4 and sometimes up to 6 weeks, so I would use this product again. Just not sure I would go with it to cycle with fish, just my preference though.

I was trying to get a new marine tank to cycle. Nothing I did got the ammonia and nitrites moving. Added Dr. Tim’s and it was cycled and fish ready in 5 days.

This review is mainly for the product as the wrong item was delivered but was dealt with well by the supplier. I have used this before to kick start new tanks both reef and freshwater and it works as stated. This is no snake oil and anyone who says it doesnt work is doing something wrong. Read the instructions and it works every time.

I used this in an already established tank that was suffering a hair algae out break worked very well

Thanks alot im impressed

I think there are too many variables in the storage and shipping process for this product to consistently work. Seems some have no issues with this product and others like myself find that it did not do anything, certainly didn't speed the process up, and I would never add life to the aquarium relying on this product to do the job they claim it does. I was doing a fish-less cycle, followed the directions exactly as the manufacturer states on their website, and never saw any indication this product was working. On the Dr Tim's website they state one and only will last 6 months at room temperature's 65 to 85°F and 1 year at cooler temps 50F, however the expiry date on the bottle I received is 8 months from now, and certainly doubt Amazon is keeping this product at 50F, so seems to be you may end up with nothing but overpriced water and bacteria if you receive an older batch, and of course we have no idea what temps the product has been exposed to in shipping, it wasn't below freezing at the destination, but who knows in route as it took 4 days to arrive, so maybe it was frozen in shipping? If there was a store who sold it locally and I could get a new batch, I would give it a go again, but with shipping there simply seems to be too many variables that can end up killing the bacteria and thus the product not working. I ended up just getting some established live rock rubble from another hobbyist with an established tank, this all around method seems to be the best way to seed a tank.