水草情迷

請問各位:

我養金魚, 魚水NH3/NH4 =0, 水很清, 但為什麼 NO2仍然有1.0ppm ?

我每三天換1/4 至1/3水, 我的魚缸是頂濾, 濾材包括:
白錦及已設有2層生物環同養菌. 沒加碳

希望各位比d意見及可以改善既地方.

Do you know what your pH level is?

If the pH level is too high, say pH7 - 9, then NO3 will turn back to NO2.

Anyway, NO2 1ppm is not very high, fish won't die.


If your pH level is too high, try to put some Eheim "Torf Pellets" in your filter, it can lower your pH.


http://www.eheimasiapacific.com/prod_e_media_chem.html

Thanks for your advice.
My PH level is around 7.4-7.6. Instead of using the chemical you introduced to me, can I use 蠔殼 to stabilize the PH of the water?

Thanks a lot.