Seashells with Goldfish?
I have a new pond (approx 5000 litres) with a pump/filter system with a
capacity up to 12000 litres.
I intend keeping Goldfish in it once everything is balanced out.
Would seashells (cockle) be okay in the base? I have read somewhere that
they are made of calcium which might be a problem - or would the filter sort
that out?
Thanks for your help:-)
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