Dr Tims One and Only - Freshwater refresh and is easily renewed by

and is easily renewed by treating with bleach per recommended regeneration instructions

along with naturally occurring bacteria

Eco Aquarium Heater

and will completely break down in the substrate

Dr Tims One and Only - Freshwater refresh and is easily renewed byThe key to setting up a successful aquarium is to quickly convert the fish waste to a non toxic form. This is done by nitrifying bacteria. Under normal conditions it can take 30 to 45 days for these bacteria to become naturally established in a newly set up aquarium. Unfortunately, during this time period, ammonia and nitrite can increase to levels toxic to fish a common problem called New Tank Syndrome. DrTim's One & Only Nitrifying Bacteria are the