The Tetra-Tec PF500's ARE hang on Power Filters with 4 activated charcoal
filters in each.

That's the weird part, I have plenty of filtration going on. The only
difference between this tank and the 120g Tropical I keep at home is, that
one has Power Heads on the undergravel filter.

JOhn :-)



"Racf" wrote in message
ink.net...
"[NOAH] John Lange" wrote in
message ...
I have a 120g FW tank that I keep FW Game fish in. I have 3 - 6" to
8" Blue
Gils, 1 - 9" Tiger Muskie and assorted bait fish(food). Totaling 50 -
60
inches of fish. Should be within the capacity of the tank.

Undergravel filter powered by 4 risers with airstones & charcoal
2 - Tetra-Tec PF500
30 - 50% water changes weekly with gravel vac
0 Ammonia, and nitrates, hardness all within tolerable ranges.
40 watts lighting on 12 hours a day

After about 3 days the water turns YELLOW and makes the whole tank
look
terrible. I vacuum the gravel with the water changes and remove a
large
amount of stuff each week. Also a brown scum(algae?) forming on most
surfaces.

Any ideas "How To" keep the water cleaner?

Thanks
JOhn :-)



A hang-on power filter would help a lot. I suggest you buy 2 or 3
Emperor 400s on-line somewhere. Activated charcoal will keep the DOCs
down and remove the tannin coloring from the water. I suggest changing
it out weekly. It won't belong and all you will have is one Musky.
Its a bit hard to believe your Nitrate level is zero with that load of
fish. That brown scum algae is a Diatomaceous film. There are many
types of algae eaters that could deal with it, but they would not last
long with a Musky. Wipe it away. In many states its not legal to raise
game fish without arrangements. Weird really......people have game fish
from everywhere else on the planet and natives are forbidden....Would
make more sense in the reverse.

Perhaps in other parts of the world they highly prize our blue gills,
sunfish, perch, shad, basses, northerns, carp, catfish, shiners,
bullheads, sturgeon, crappy, alligator gars, musky, and minnows but I
never hear about them on here.