I am somewhat of a newbie. I have a 55 gallon tank with about 5 fish in it. I shave done 25-50 percent water changes. Added stress coat prime etc. Everything reads fine except the ammonia is at 1 ppm and phosphate is off the charts. I have a phosphate remover pad in my filters. Nothing seem to be changing. At my wit's end. What do I do so it will be good to go with balance so I can start adding fish. I've done water changes twice a week for over a month now.. PLEASE HELP