Lacking is an understatement! Welcome to the world of eheim...where there filters rock but only if you already know how to use them. LOL....all first-time eheim users wonder just where the heck the instructions are.
I recently purchased an eheim for the first time as well. Like you, I was frustrated with the lack of instructions (or at least worthwhile instruction) in the package so I ended up youtubing the filter model and found great installation videos on how to start up the filter.
Pearling.....it's way overrated.