Sorry if this is not in the right section. Over the last month my Anubis / single sword started to go down hill. I wasn't dosing any ferts due to low light plants and had ready they didn't really need anything. From researching it seems it might be a manganese / magnesium, and maybe potassium due to the veins being darker. I stated dosing flourish after weekly 30% water changes. I'm thinking about dosing trace also. Tank is 10G running a finnex 24/7, (not on 24/7 mode) Any insight is appreciated.