I have had my 210 up for a few months now, I am running a aq110 2 rena xp2s and a fx5. at one point i had my water permaiters going perfect. but a month ago I added the second rena xp2 and my ammonia is at 1ppm 0 nitrate 0 nitrite ph 6 doing water changes 25-30% every other day or so and cant get it down. could adding the new filter start a cycle process. I have 3dats 5inch,bass 5inch, motoro 10 inch,arow 14inch, 3 bichirs 7inch. everything is eating and acting normall. should I just keep up with the wc, try cutting feedings?