Cycle Bio Filter Supplement - 8.4 Ounces

THE PICTURES TELL THE TRUTH! A difference in just 4 days from the worst to the best!I enjoy a 75 gallon fresh water fishtank and in it live 10 black skirt tetra, 2 pink gourami kissing fish, a 16" Pleco (algae eater), 4 beautiful angel fish, & 10 Corey catfish. My tank was ALWAYS clear and beautiful until my son brought home a little feeder goldfish he won at the fair 18 months ago. That goldfish grew so fast and so big that I started having a major issue keeping my ammonia, ph levels, and nitrite levels balanced! That half inch feeder goldfish grew within months to be 16 inches!! My tank got so cloudy I couldn't see my fish and the ammonia levels got so high once that I killed my beautiful Angelfish and gave the goldfish such horrible chemical burns from it that you can still see the scars on it today! - that I cried! For weeks I tried everything I could to level everything out in my water to the point I thought of killing the goldfish I felt was causing my issues - until I found NUTRAFIN CYCLE. Within 24 hours my water chemical level evened out!! And I haven't had an issue since with my freshwater chemical levels being unsafe for my fish. That was 5 months ago. Since then I started using NUTRAFIN WASTE CONTROL along with the NUTRAFIN CYCLE and my fish are healthy and happy. With water changes and the help of a water clarifier called KLOUDAWAY made by Aquatic Experts (I buy it all on Amazon), My tank has been crystal clear and my tank healthy!!! This stuff works and works fast! It will help just about any tank and keep it great as long as you follow the directions. I'll NEVER use anything else but NUTRAFIN for my tanks! Just look at the pictures. Seriously, my tank got horrible fast - not just looking bad but it SMELLED like a fish market in my living room! Today my tank is balanced and clear, peaceful and beautiful! 5++ stars all the way around!!!

After having a lot of issues cycling my tank I decided to try this product. It only took six days to cycle my tank! I have two other tanks and they took much longer to cycle. I strongly recommend using it along with Dr. Tim's ammonia chloride solution for a speedier cycling. I'm just so excited to have tried this product and will for sure use it again should I decide to cycle another tank.

Usually use SafeStart but tried Cycle this time. There is no doubt that some bottled bacteria do speed up tank cycling. Nay sayers just did not use it correctly. Cycle's bacteria started munching on fish poop immediately. I never had above .5ppm ammonia (1day only) and then lowered to 0ppm within 10 days. Yes there were 7 gluttonous and pooping fish in the tank who stayed well and unstressed. I've had fish tanks in my home for almost 50 years and have always cycled with fish. IMHO It's not cruel, at least when I do it, and my fish flourish during a cycle if you pay close attention, know what you're doing and don't get lazy about daily tank care. Too many self-centered kids these days want things they have no business having---think of any poor caged or tanked creature who suffers at the hands of these dopey kids or adults for that matter. Pure abuse. Use bottled bacteria, it works. It really does. Forget what other know-nothing's say.

Nutrafin is one of my favorite products! Now you can establish the nitrogen cycle without this item but it sure does cut the amount of wait time, and after running a few tests to make sure the live bacteria was actually doing its job it really was and have fallen in love with this product. I have used it on 5 different setups and decided not to use it for a fancy goldfish and oh boy did I run into issues that I was able to fix but it would have been so much easier having used this item.

I'm very new to keeping aquatic pets, but after over a month after starting, my fish, shrimp, snail and plants are healthy and the tank is stableI got a 5 gallon acrylic tank kit with some substrate and a rock and started dosing with Cycle from day 1. After a day or two, I bought some marimo moss and a couple of red shrimp from a local shop and added them into my new tank. Within a week, after doing partial water changes every other day, it seemed like my tank finished cycling with trace amounts of ammonia, no detectable nitrites and a build up of nitrates.Now it seems that without any cycling product, it typically takes about a month to fully cycle a new aquarium. It took me a week with Cycle and no algae bloom!I do add a little bit of Cycle in after doing water changes, but only because I have so much left (I think I bought the 16 oz bottle) and its shelf life is relatively short due to live bacteria inside. I don't think it's necessary, but I did recently buy a new filter and it certainly didn't hurt.Definitely worth checking out.

The ammonia in my tank was out of control and we were trying everything to fix it. I read about Nutrafin cycle on the internet and purchased a large bottle. It worked miracles. My ammonia level has been 0.0 since using this. However it is very expensive (my first bottle was over $25.00. I purchased it from Amazon using Prime for $14.65 and free 2 day shipping. I saved about $10.00 and will continue to buy this from Amazon as the price is much better and the free shipping from Prime keeps it that way.

Worked at petsmart for years, left more than 10 years ago. Recently rediscovered this product here and proven true! By far best bacteria I’ve ever used

I setup a brand new 75g, let it run for 2-3 days before I went an bought 2 jaguars(3"). Before I left out to go get the jags I shook the Nutrafin cycle bottle for 2mins (arm was super tired) and added the first treatment. I followed the directions on the back to a T and I never had a problem. It's been about a month now and everything is still going well, I just add Nutrafin cycle once a week and with water changes. I think I like this stuff better than stress zyme (if they even serve the same purpose). I got Nutrafin cycle from amazon.com almost %50 cheaper than what my LFS was selling it for.

I that I used a lot of this where as prime does a better job and goes a long way

I've used this for number of years for my fish in tank.

One bottle of this and my 40 gal tank is clear, healthy, and my fish are happy. I got the 8 oz bottle and followed the instructions, 2 weeks later my tank is almost fully cycled and looking great

item came quickly, was as I expected