Trying so hard to figure out the chemistry of this hobby. I am in the process of cycling my tank with cured rock....and substrate......changed 10% of the water after one week from the setup date...nitrite level was high, nitrate level was about 10ppm...is that too high.?..could not tell exactly what my akaline level was by the tape...actually did not look too good....help.... tank set up January 1/29/06