Thanks to all who chime in...
I had SWC xtreme 200 with sicca Pak-2500 pump.
Skimmer ran good other than it won't startup after power out. Now I found skimmer and pump full of groves and it won't start at all.
So options are buy new pump or new skimmer.
New pump; do I have to buy the same pump? or can I fit any other pump with this skimmer??
New skimmer; is there any other skimmer you feel is better and would last a long time for me.
Tank is 90 gallons with medium- heavy load. Have 150lbs of live rock. I do 10% water changes every 2 months. All parameters are normal so far.