Author Topic: Backyard Pond Advice Wanted  (Read 2985 times)

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Offline Terpfan76

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Re: Backyard Pond Advice Wanted
« Reply #50: June 02, 2012, 07:58:43 PM »
You haven't mentioned water changes yet.  Just adding water to replace evaporation will lead to a buildup of nitrates over time.  Not a problem in low amounts (unlike ammonia which is deadly) but in high amounts is toxic.  If you aren't doing water changes, then I'm going to venture a guess that your Nitrate reading is off the scale.

That kit's cheap at any fish store.

I did drain it almost entirely in October, I think and then refilled it. I'll do a 70% or so swap just to be safe.