Caribsea Special Grade Reef Sand Size:15 lbs But a lot has changed

But a lot has changed in the meantime

Nitrifying bacteria can take weeks to naturally establish colonies in new aquariums while ammonia and nitrite can reach lethal levels in only a few days

Our portable handheld colorimeter goes where you go

patchy coloration or any change in behavior of the fish

Magnesium is an essential part of chlorophyll

Caribsea Special Grade Reef Sand Size:15 lbs But a lot has changedAragonite Substrates Recognized globally for their purity and precision. Our substrates are purposely engineered and free of impurities such as ash, metals, pesticides, and silica; which allows you to create a safe and beautiful environment for your fish and invertebrates.