to save money i'm mostly monitoring film algae on my glass to help determine gfo replacement. my levels must be adequately low as the film comes back pretty slow. i have a feeling my cyano is fueled by something else but yes i have been quite religious with my nutrient control thus far. makes having cyano all the more frustrating since i never had it once in any of my previous tanks other than the last nano during the upgrade/neglect phase.
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