Ammonia and nitrites need to be 0, did you add ammonia to cycle the tank?
if you haven't added ammonia, you've not had your tank cycled. look up how to do a fishless cycle. and do it, be patient, there's no way to succeed in this hobby without having a good amount of patience.I forgot to add but yes my ammonia is zero. Im not sure what kind of tetras really but I like the neon ones so probably those. The plants are growing well, lots of roots and green. Is there any way to lower the ph other than wait? Thanks=)