Another Newbie question for you

[Chronicles]

I was wondering why I see all these ammonia, nitrate, and nitrate removing chips, pillows, etc for freshwater and not for marine?? Only one I could find is this:

 

"The resins in the Hypersorb remove ammonia, nitrate, nitrate and other pollutants from your fresh or marine aquariums"

[Chronicles]

I found another:

 

Renew 1L (34 oz) (Seachem)

Use in place of carbon, does not leach phosphates or raise pH. Removes organics ammonia, nitrite, nitrate. Use in fresh or saltwater aquariums. Does not alter the ph like some carbons. This is a resin.

 

 

 

Denitrate 1L (34 oz) (Seachem)

Absorbs nitrites, ammonias, and organics from fresh and marine aquariums. Supports growth of both aerobic and anarobic bacteria.

 

 

Nevermind I just found the motherload. X)