This stuff is great to get ur tank up and running and ready for fish. Just get ur tank setup the way you want it, and some cycle and in 24 hours you will be able to add fish. It comes in a few different sizes, and easy to read instructions.

Pros: Easy to use

Cons: none that I know of

This works great for the experienced person or beginner to balance your aquarium!

Whats best?? It's all natural!!!

Pros: natural!!

Cons: none

This adds beneficial bacteria, but I like Seachem Stability better.

Pros: Adds Beneficial Bacteria

Cons: Not as good as Seachem Stability

I use this when I start up a new tank.Works very good.

Pros: easy to use

Cons: none