So I started my reef tank 5 months ago. Have 3 fish. Phosphates range from around .03-.08 but nitrates have never gone above 0 except after the cycle and they went back to 0 after the first few water changes. I have tried feeding a lot to raise them but it hasn’t. I have seen that the algae consumes the nitrates so I’m assuming it is that but I have had mixed answers from viewing old forums. What is causing this low nitrate and is there a way/time they will go above 0?