Water Flow Issue

I can't tell from the pics but, it seems likely that that the plumbing to the water feature diverts too much water from the SWCG. If this is not normally a problem then your filters probably need to be cleaned to increase available water flow.
 
It was not a problem for the first year just started acting up last month. Might be a filter issue because when I clean it it works fine for a few days and then start acting back up. How often should I be replacing my filter?
 
I answered your filter cleaning question on your other thread. I haven't replaced my filters in 3 pool seasons I clean once in spring and once in fall. But, if algae gets away from you then you'll have to clean every few weeks until you get all the algae killed.
 
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