Newbie 75 gallon

[Frogger]

No the stuff i have is from a online fresh water fish guy in Richmond. I had to sign my life away to get it.

Filter socks don't filter down to a fine enough particle size to effectively capture all the microscopic dinoflagellates and their spores. Most filter socks are either 100 or 200 micron in size and are designed to remove larger particles.

The Magnum micron cartridge is 8 microns and dinoflagelletes are between 25 and 50 microns in size. It uses pump pressure to force the water through it, versus gravity.