The house we purchased a couple years ago has a small pond/water feature in it. It is a 4ft diameter tube that is 3 ft deep. There are 3 large goldfish in it that have survived a couple winters. The pump that controls a small water feature stopped working a time ago and I replaced it with a cheapo harbor freight pump that has worked ok but the gets clogged after a couple weeks with algae, etc.
There are lillies that come up in the spring.
How can I keep this thing clean without damaging the lillies or fish?
Any recs for a filter?
It looks extra dirty in the pic as our ivy is shedding pollen and things everywhere.

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There are lillies that come up in the spring.
How can I keep this thing clean without damaging the lillies or fish?
Any recs for a filter?
It looks extra dirty in the pic as our ivy is shedding pollen and things everywhere.

image url upload

upload images free