I know I'm new to this but this is what I see in the link.
"There are other methods of fishless cycling being recommended or used however one method being pushed on the internet is the use of Raw Shrimp; however this is a recycled idea (which included the use of silversides, frozen shrimp, and even dead feeder fish) and has reappeared on the internet even though it was debunked in the early 1990s.
I do not recommend this method, not because it does not work for cycling, but because it may also allow a Saprolegnia infection to get started in your new aquarium. Saprolegnia is a mold (often called a fungus) that easily gets a foot hold in decaying nitrogenous matter such as raw shrimp and I have seen this many times in my experiments. Even after the source of Saprolegnia growth is removed, the secondary zoospores which are the primary mode of pathogenic transmission can remain, even after large water changes/vacuumings.
A new tank is the worst time to have a Saprolegnia infection get started as this is when fish are often much less resistant to disease due to the stressor of a new tank environment."
"My preferred cycling method is to transfer filter media (sponges work well as Autotrophic nitrifying bacteria tend to cling to sponge media in high quantities and sponge media is easily transferred), although floss, ceramic media, volcanic rock, etc.are also fine from an established aquarium and possibly along with some gravel, then introduce the fish SLOWLY after 3-7 days."
"For marine tanks the use of seasoned or “cured” live rock serve this purpose quite well. I recommend this method even more with Marine tanks using seasoned (cured) live rock and/or live sand as well as filter media. In Marine tanks I still prefer to added aged media (not essential, but still better) along with 1-2 lbs (2.2 -4.4 kg) CURED live rock per gallon (approx. 4 liters)."