i am glad you dont want to put chemicals. they will just mess things up more. i thought the liquid test kits were cheaper. i got the ap master kit for $13.50 from petsmart. all you have to do is print it out and take it in there.
http://www.petsmart.com/global/prod...t+kit&In=All&previousText=master+test+kit&N=2
i never heard petco doing this only petsmart.
http://www.petsmart.com/global/prod...t+kit&In=All&previousText=master+test+kit&N=2
i never heard petco doing this only petsmart.