I been ferting with seachem npk and their micro line. Pumping pressurized co2 and have 3x24 t5ho bulb 24inches above the substrate. I did 25% water changes every friday. Was having all type of issues with all types of algae. Now that my co2 ran out I stopped the ferts and turn one light off. All algae disappeared and rotala are getting a nice red color. I don't get why they tank is now healthier without co2 and weekly ferts. I still have capsule in the soil. Should I start up co2 again and fert less? Or leave the happy tank alone. I don't want everything to start dying.