Brightwell Aquatics MicroBacter Start XLM - Concentrated Freshwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Aquarium Water Treatments, 4.22 fl oz

Works

Very easy to use and extremely effective for not only turbo starting your aquarium but also maintaining good levels. Brings Ammonia to 0 very fast.

I fed liquid ammonia to the tank (there are dedicated products you can buy). With this it was easy to cycle ammonia to nitrates. I tested the water every 2 days and then re-dosed. The size I bought was enough to continue dosing every 2 days until it cycled. I also had dry rock and live sand, so that could've helped with the speed. Overall, much faster than my freshwater aquariums compared to other brands.

A good product

We bought some of this for our 140 Gallon system and some for our 20 Gallon Quarantine system. They are quick and do a great job of cycling the tank.

If you want to create a New Reef tank in Hurry it's one of the Best Bacteria for Cycle in Tank in 1-2 days. I recorded the results every 2 hours and it's amazing that in first 2 hours it's starts the Ammonia up and down by 4-5 hours and N02 becomes high and down 7-9 hours and N03 takes time little bit more like 22-30 hours. but 38-40 hours its everything in low and as per reef condition. But have to use Bio Media like Live Rock or Carabsea Sand.For my Tank I used CarabSea Life Rock 20 LBS, Carabsea Life Sand (White and Purple) with Reef Sea Reef Salt-Blue one (not Red sea Coral Pro). I don't Turn on the light more than 6 hours in first 2 days and in Day three i Added two SPS and 3 LSP and it's Perfect. PH-8.2, Alkalinity - 9 and Salinity 1.35 now my tank is running perfectly and after 2 days I turn on Light and Protein Skimmer. Money worth with this bacteria

I have been a Brightwell user fro many years, but this product stands out in their lineup. I have used this to start 5 aquariums now, including 2 systems over 800 total gallons. It cycles the tank quickly and gets it safe for fish. I do not follow the instructions to add fish to cycle. I use an ammonia source, such as Fitz Ammonium Chloride to kickstart the cycle.

This is a well regarded product and I would recommend if you can purchase locally from temperature controlled environment. If you live in a hot area during the summer do not buy this from Amazon. The bottle I got did not work at all but I'm also not too surprised. Its been reaching temperatures of 100 here and products in amazon warehouses are subjected to temps up to 100 here which will greatly diminish the shelf life of this product.