water flow

flatsout1171

Reefing newb
i just notice that the return line that goes back to the tank..the water is real slow coming out of the 2 pipes? its a little giant pump i used to have more water flow than it is know any suggestions?
 
Dirty pump. Clean it. OR a cracked outlet where water is not all directed into the return line ( if the pump is in the sump).
I have had two Quiet One pumps in which the outlet housing developed a crack, thus reducing the water flow.
 
it is external but before it goes to the tank i have a ocean clear cannister that i put my carbon and phosphate bags in. i was thinking that maybe the bags could be the problem but i have always put them in there.so cleaning it means pulling the front housing off and clean the impeller right?
 
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