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Problems with cycling/water tests

Subject: Problems with cycling/water tests
by madindehead on 4/7/2011 16:02:49

Hello,

We have had our tank for a while now, and the tank was fully cycled at one point, it certainly tested as being fully cycled.

I did a water test today (was last changed 6 days ago), and the readings are Ammonia: 0 ppm, Nitrite 0 ppm and Nitrate 0 ppm.

This is making NO sense to me at all. The pH test works properly (granted it shows a pH of 6, but I am correcting that).

Our water pH is 7, so why on earth is the water going from 7 to 6 over time? Also, any reason why all the reading appear to be 0. I am at a loss. I want to fix all this before my girlfriend (Aza) gets back, as I am looking after the fish for her until 25th August. Also, a new tank is in the works for September, so until then, I just need to keep them going in the small tank :( Any help you be great! Also, can anyone recommend some good plants for the tank, and where to buy them? Thanks