phospahtes and nori

wmatt140

New member
I thought I read that nori adds phosphates to the tank. I've searched but can't find anything. Can anyone comfirm this?

Thanks,
 

Randy Holmes-Farley

Reef Chemist
Premium Member
All foods contain substantial phosphate, but unless they have added phosphate (like some fresh, canned and frozen seafoods for people do), I am not certain that any particular type of food has more phosphate relative to other nutrients like protein than do other types. One thing that adds a ton of phosphate is anything that has bones in it, including whole fish.

Ron Shimek analyzes some foods here:

http://web.archive.org/web/20010720071031/http://www.animalnetwork.com/fish/data/foods.asp

I've calculated the phosphorus to protein ratio for these foods, and I get:

Formula Two...........................176
Formula One.............................69
Frozen Brine Shrimp................232
Frozen Plankton/Krill...............182
Golden Pearls..........................273
Lancefish.................................244
Nori..........................................221
Plankton Gold Flakes...............169
Prime Reef.................................69
Saltwater Staple......................500
Silversides...............................952
Tahitian Blend..........................318
 

wmatt140

New member
info

info

Randy, thanks for the info. I see Silversides are substantially higher than other food sources. Would you consider that difference high enought to find an alternative to feed my open brain? I feed about a quarter to half a Silverside once a week.
 

Randy Holmes-Farley

Reef Chemist
Premium Member
It might be from the bones in the sliversides. Unless you know you have an algae or elevated phosphate problem, I wouldn't change the practice based on that measurement. :)
 
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