Veggie filter
Hi all
I have a vegetable filter and a pond with no UV - i now have a very green
pond - this is the first time (move in three summers ago) - its a 500 gallon
pond
I have been told that i should grow water cress in the filter - can anybody
advise on type and where i can can get some - and if it will work? Location
= NW England
Pk
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