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Re: very mysterious deaths...
> Date: Mon, 12 Jun 2000 10:41:20 -0400
> From: "heinesen" <heinesen at idirect_ca>
> Subject: very mysterious deaths...
> My apologies to those who feel this is off topic. This morning I found two
> of my (female) dwarf neon rainbows, dead in the tank. The tank is a
> 50-gal. with 110 watts of fluorescent lighting, has been running for about 6
> or 7 weeks, is heavily planted (new plants, so except for fast-growing ones,
I had the same problem in my 55g heavily planted tank. The
were occuring after a few days of overcast skies (my tanks are
outdoor). Overcast skies cause low O2 levels I presume and at
night the plants deplete these low levels and cause fatalities.
The older larger fishes seem prone to this..
After I lost a few prized Orandas, I set up a photo-electric
switch that switches ON the air pump after dark; at the same
switches off the filters (reduces the turbulence).
I also switch on the lighting (72W) on overcast days, normally
these lights are swicthed on at night when I have visitors..
Bangalore, South India