Vortex diatom filter

[chewie]

I have heard that the powder is very bad for your lungs though so you have to be careful not to inhale it. I am not sure if I will get the vortex (it is used) or go for a new magnum 350 canister which is supposed to do the same thing (using a filter cartrage) as well as being a regular canister filter. You just change out the media baskets for the water scrubber cartrage.