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Hi our tank has been set up for about 3 months, our ammonia is 0, nitrite 0 and ph is about 7.8 but the nitrate is about 30-40 and we have a big brown algea bloom, I read some in the nitrogen cycle about the brown algea and relize that when the tank gets more phosphates that there will be more green than brown algea. We did a %20-%25 water change to get the nitrates down but did a test 24 hours after the water change but the nitrate test still reads the same. Its a API master test kit and I fallow the directions and shake bottle # 2 for 30sec and then 1 minute to mix and wait 5 minutes. Now the strip test says fine safe, and even the API test anything 40 and below is fine but I have been told on this forum 5-20 is better. Do I need to be doing somthing else? My fish are 3 angels 2 german blue rams, a neon dwarf gourami, and a catfish. They all seem fine very healthy and always hungry, but I want to make sure it stays that way. I have added some prime and stability just a little, to make sure the nitrates dont stress them. I have 2 live plants and plan on adding some more to see if that helps.