Thalassiosira weissfloggii for culturing

New Thalasiosira strain acquired June 26 2025. Our hobbyist grade is finally gone. 

Thalassiosira weissflogii is a large diatom phytoplankton. This species can tolerate a wide variety of salinities from brackish to saltwater, we grow ours at 1.022 specific gravity. Thalassiosira weissflogii is used for raising shrimp commercially, most sites claim this is the best algae for rearing shrimp and our copepod cultures seem to love this strain as we never find many cells after 24 hours from feeding. This strain can reproduce asexually and sexually.

Thalassiosira weissflogii is known for HUFAs, EPA and DHA fatty acids. If you're raising copepods this strain should be in your arsenal of phytoplankton cultures.

We recommend using Florida Aqua Farms modified F/2 fertilizer on this strain with water glass or silicate water. We dose 5ml of FAF F/2 and 2ml of our silicate water per gallon of water volume.