Help! Climbing nitrites

When I did the last water change/test (test before change) I saw nitrites,
which had been at zero for nearly two months, at 0.5 ppm. This was
Saturday. I thought that maybe the biofilter had been not as effective
because the water was colder than previously (about 68) so I got a heater
and worked the tank up to about 72. Today, I checked again and we're now at
1 ppm! Also the water is rather cloudy. Finally, I'm also seeing ammonia
now.

Parameters:

Ammonia: 0.25 ppm
Nitrite: 1 ppm
Nitrate: 20 ppm
pH: 7.8
dkH: 5
kGH: 11

Tank is a 29 gallon, still with two comets: Hoshi at 5" (including tail).
Mika-chan at 3"
Two HOB filters. A Top Fin at about 150 gph and a Penguin BioWheel 150 (150
gph). Both have two cartridges in place and a filterfoam prefilter on the
uptake tube.

Green Dust algae that has been growing on the gravel for some time has gone
from green to a grayish color.

Help?

BTW, I plan to get a 55 when I get paid at the end of the month and the
Goldfish will be moving there--with the 29 converted for tropicals.


--
David L. Burkhead "Dum Vivimus Vivamus"
mailto:dburkhead@sff.net "While we live, let us live."
My webcomic Cold Servings
http://www.coldservings.com -- Back from hiatus!
Updates Wednesdays

On Nov 20, 7:55�am, "David L. Burkhead" <dburkh... DeleteThis @sff.net> wrote:
> When I did the last water change/test (test before change) I saw nitrites,
> which had been at zero for nearly two months, at 0.5 ppm. �This was
> Saturday. �I thought that maybe the biofilter had been not as effective
> because the water was colder than previously (about 68) so I got a heater
> and worked the tank up to about 72. �Today, I checked again and we're now at
> 1 ppm! �Also the water is rather cloudy. �Finally, I'm also seeing ammonia
> now.
>
> Parameters:
>
> Ammonia: 0.25 ppm
> Nitrite: �1 ppm
> Nitrate: �20 ppm
> pH: �7.8
> dkH: 5
> kGH: 11
>
> Tank is a 29 gallon, still with two comets: �Hoshi at 5" (including tail).
> Mika-chan at 3"
> Two HOB filters. �A Top Fin at about 150 gph and a Penguin BioWheel 150 (150
> gph). �Both have two cartridges in place and a filterfoam prefilter on the
> uptake tube.
>
> Green Dust algae that has been growing on the gravel for some time has gone
> from green to a grayish color.
>
> Help?
>
> BTW, I plan to get a 55 when I get paid at the end of the month and the
> Goldfish will be moving there--with the 29 converted for tropicals.
>
> --
> David L. Burkhead � � � � � � "Dum Vivimus Vivamus"
> mailto:dburkh...@sff.net �"While we live, let us live."
> My webcomic Cold Servingshttp://www.coldservings.com-- Back from hiatus!
> Updates Wednesdays

I would do another water change and gravel vacuum.