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Its perfectly normal in a healthy planted tank with good growth. I even have
zero phosphate in my 35 gal if I don't dose. If things look fine to you, you
maybe better off leave it this way. But by start dosing KNO3 would almost
guarantee better growth in your case.

Cheers
Kenneth


"blank" ¦b¶l¥ó
u ¤¤¼¶¼g...
Hmmm. I'm beginning to think I have misunderstood the role of nitrate in
an
established planted freshwater aquarium. My ammonia level is almost
always
zero (or so it appears from my Aquarium Pharmaceuticals test kit.) But
recently I have noticed newsgroup responses indicating that some nitrate
is
good for the plants.

Maybe my weekly 20% water change is excessive. I'd appreciate
advice--should I reduce the weekly quantity, reduce the frequency, or just
stop being so damn obsessive? My plant growth is disappointing. The
other
paramaters are normally: pH 7.6, GH 6, KH 5, PO4 0.25. (No CO2 injection,
quite heavily stocked 75gal tank with about 25% plant cover).





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