37 Gal. PH 7.4-7.6, A- .25 Na- 1.0 - OR HIGHER (Been changing water every day to remove), Ni- 5-10 maybe 20. I have started over again and again with learning more about the Nit. cycle. I have a Topfin 40 its been running for 1 month. I bought and added a new filter. both are running and for the past week. my question is...did I cause more harm by adding more filtration during my cycle to cause these numbers to spike? or is my tank just going through its cycle. side note. my filter looks dirty as dark. change filter maybe ?