Kamil,
I think you have the filters mixed up, The primary is the small inline filter you can see thru. The secondary filter is the "can" filter. I know this seems wrong but I think are named by the order in which the fuel goes thru them.
You are really wasting your money changing fuel filters so often. Read my dissertation on why a used filter actually works better. Find it with the search feature. If you have an fungus (its not algae), only a biocide will kill the fungus.
P E H
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