I bought this not really sure if it would help or not. All my friends said the tank will cycle in 4 to 6 weeks and you don't need this. I bought the product anyway and was pleasantly surprised with it. My tank is a 45 gallon redsea but I used the directions and dosed my tank like it was a 25 gallon tank. Within 17 days my tank was cycled and ready to go. The directions give you a range of 'your tanks ammonia should be around this mark at this date but it might be more or less'. My tank was off those marks but at days 17 I was reading 0 ammonia, 0 nitrites and 20 nitrates. The directions were very easy to follow and dosing was simple. You do need some sort of test kit to test the water to see where you are but other than that this was simple and easy. I waited the full 21 days before I put some fish in there but was confident that when I did put them in there they would be fine.....and they are.

I bought this a first time aquarium owner thinking it would make cycling easy. in reality, I found it quite difficult to use as you have to follow instructions precisely. "Adding improper amounts of any supplement can have negative effects." Few things are happening as the instructions said they would which makes me think I didn't do it correctly. I'd recommend another product because I'm not a chemist

Buy this stuff. It really works. I cycled 120 gal display tank, 120 lbs of dry rock as well as some live sand and was ammonia and nitrite free in 10 days. So far, the system is holding up great and I couldn't be happier. It takes a little bit of work, but it's worth it.

Follow the directions and you'll succeed. Also depending on your tank size you may need to order more than one. It's a great product; after numerous attempt at keep anything alive in my tank I found this product. Start with this product and finish with the best

This does great, works perfect def speeds up the process.

It's a good way to cycle and start a low nutrient tank. It is recommended to run a skimmer while you use this program

I'm sure all of us at one time bought some inexpensive damsels to either get our tank's biological cycle going OR to test to make sure the fish don't go "belly up" by morning before adding the livestock you really want. Why sacrifice livestock when you can use this product to get your tank's biological system up and running. Once you use this product, I guarantee you will ALWAYS use it when establishing your next new reef tank.

I would say this is pretty straight forward and easy to use. Water parameters have been on target with what they tell you to expect. Thumbs up.

I bough this a while back and finally got to start using it. I was a little frustrated that there were no black and white directions as to how much each kit treated. FYI each kit treats 60 gallons. Ended up having to reorder a second kit because it was not clear enough how much it treated. Everything seems to be going as planned. Nitrates are higher than what kit says but I think that is mainly cause I am still learning how to use my protein skimmer. It said I could add a clean up crew. LFS didn't have anything today so I added a crab from another tank and we'll see how he fairs.
Overall, I think it it has given my tank a good and healthy start for the better.

I used this kit for the 21 day as directed inthe instructions but my tank still wasn't cycled and Nitrates were off the charts. I believe I got a bad batch. I let the tank finish cycling on its own and it took about another two weeks. I don't believe this system helped my tank at all. Hopefully you have better luck

I've been following along on the BRS 160 build. I'm giving it a try for my new build. 16 days in and things are progressing nicely. Note that the time frame assumes you are using live rock. I cured dry live rock for a month so the timing is different. I like using this method to spare a livestock the ammonia spike. Great product and good support as always form BRS!

Used this on my 65 gallon. I was able to complete the program with the contents. Amazed that it actually works. 5 weeks and I actually have coralline growing and perfect water parameters.