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nina_gretta

water went brown after bio filter!

nina_gretta
11 years ago

I built my bio filter a few months ago and it cleaned the water up great. Now the water is kinda brown looking. I have 2/3 covered with plants and also put up a shade sail. We have had rain the past few weeks (monsoon season) but the rain does not run from the yard into the pond. It will run from the concrete patio. Any ideas why it is turning brown. I'm resisting cleaning out the bio filter but it is hard.

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