Hi guys. I seem to have a problem with my red sea max nano. The water from the display doesn't seem to be running through the filter sock compartment (now has filter floss). I am new to this and have had it set up around 3-4 weeks. It was definitely running through it to start with and the only thing I have changed is the protein skimmer adjuster. It says in the instructions to set the adjuster to the lowest point but unless mine is at the top it does nothing. At the minute water just seems to run from the skimmer back into the filter sock compartment. Is this a skimmer problem? It was used so I didn't buy it new. I have attached a picture. You can see that water isn't running from the display into the filter floss and how high the skimmer adjuster has to be up for any foam to be produced.