Nothing wrong with planning, unless you like mistakes
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1.25"-1.5" PVC will be fine. Error on the larger side if in question.
The last ref. I marked 'ultimate' is a very simple bio-filter (bottom of page) that can be modified (sized) to meet your needs. I used cattails, hiacynths & water lettuce (free here) along with lava rock (cleaned) and a two stage pre-filter. I've found frogs & tadpoles, minnows & mosquito fish in there, that I didn't put there.
Got any pix of the pond?
Dr Joe
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1.25"-1.5" PVC will be fine. Error on the larger side if in question.
The last ref. I marked 'ultimate' is a very simple bio-filter (bottom of page) that can be modified (sized) to meet your needs. I used cattails, hiacynths & water lettuce (free here) along with lava rock (cleaned) and a two stage pre-filter. I've found frogs & tadpoles, minnows & mosquito fish in there, that I didn't put there.
Got any pix of the pond?
Dr Joe
.