Brightwell Aquatics MicroBacter Start XLM - Concentrated Saltwater Nitrifying Bacteria - Quick Start Fish Tank Starter, Lift Microbe Levels & Water Filtering - Marine Aquarium Treatments, 8.45 fl oz

It’s a good product

I almost had a new tank crash but identified that my nitrite bacteria were too low. Added this and issues were gone. Love this stuff!

Great to help set up aquarium. Help speed up the process of the new start tank.

Works

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.

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.

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.