Brightwell Aquatics MicroBacterStart XLF - Concentrated Live Tank Starter for Cycling New Freshwater Aquarium and Establishing Nitrifying Bacteria, 500 ml

This is the best quick start for bacteria that i have used. I’ve tried all the other brand names that everyone is aware of. My tank was cycled in a week. Will be my go to from now on.

I was having a bit of a problem 'cycling' the 125-gallon tank with Seachem Stability. Ordered the Brightwell Aquatics MicroBacterStart XLF and, combined with Fluval's Biological Enhancer added on top of the Seachem Stability, the tank was completely cycled within 48 hours. Granted, the Seachem had the ammonia taken care of, but the nitrites were just not budging and would escalate rapidly without major water changes and additions of Seachem Prime daily. I am SOOO glad to have found the Brightwell product.

Like most long time fish keepers, I've always been suspicious of any product advertised as nitrifying bacteria starter. I always assumed these products were a hoax. Recently, I've been struggling to get some of my new aquariums cycled and decided out of desperation to give some of these products a try! I had no luck with the usual pet store bacteria starters, but I saw a good review for this product online from a long time hobbyist and decided to give it a shot. I am truly blown away by the results! This product got a 10 gallon and a 20 gallon cycled in 7 days exactly, and in that time I never had an ammonia or nitrite spike and never had to change any water. I'm honestly amazed! If you're struggling with a new tank I would highly recommend this starter. I'm so glad I tried this product, and will definitely be using it religiously in the future!

So idk why but it isnt doing anything for my tanks. I've already used half of it in 2 days. It isnt lowering the ammonia levels at all. And I've used a lot of it. I add 10ml every 30 minutes like it recommend, no matter how much I shack it it's still clumpy I really want my money back so I can order from brightwell websight I know the product will work I've used it before but I am not buying from this seller again

This product cycled a brand new tank in 29 hours. No joke. There is nothing out there even close to this product.