Hey guys...I have a 120 gallon community tank i'm running an eheim pro II 2026 and and eheim 2217, with 30% WC every 2 weeks....I also have a rena xp 2 running, but I have taken it off and sold it....now with the rena the readings are good 0 ammonia, 0 nitrite, 30 ppm of nitrate...now with the rena gone and my habit of overstocking my tank will the water parameters be effected or am I still okay?????thanks.....