Filter aid by interpet works a treat. Initially makes it worse, but soon clears (24-30 hours) It works by grouping the fine particles together so the filter can catch them better.
The wool that Snake reffers to is called Filter Wool or Filter Floss.
In all honesty, if it is a bacterial bloom which it does look like then it is a good thing and will soon clear. It is a sign that the nitrogen cycle is working.

Water changes don't really help either, so don't get doing loads of 100% water changes. lol.