tjwads wrote:
hi paul, i did not realise that ,we have never checked the pond water ,just flush out the 300ltr filter every 4-6 months,but the fish look well ,and have not lost one in over a year,but that duck weed obscures your view of the fish completly ,but in a tank it would work well as its a side view .
in a pond, what i always suggest is to put rope with floater to
control the duckweeds in one side or to create an open space at
the center.
plants really control ammonia and nitrite. i had an experiment
with my 90 gal tank and have no water change for 17 months.
all my fishes grow huge.