Okay to cycle tank with really low ph??

[JenniferL]

I just placed everything in the tank and we'll see how things adjust over the next while as I will be testing the water frequently anyways. I'm using the API test kit just bought it. The other few things that I had tested are as follows

calcium-540ppm which is a little high I think
dkh- 18 !!! through the roof
SG- 1.025
pH-7.4


The only thing I have not tested yet which could be contributing factor is Mag. I will test that tomorrow. I agree I would rather not start adding this and that and end up having more problems down the road.
Thanks again