I own a 75G Discus aquarium with C02 injection and a daily dosage of liquid fertlizant (Nlogic Thrive 3ml/day). All my plants grow well with one exception, my Echinodorus ... No presence of algae. I have done very well in the past with this kind of plant but it is not the case anymore so something change but I can not find it. The plant produces small leaves that do not mature and become necrotic ... Is it possible that my other plants consume all the nutrients (fast-growing plant) and deprive my Echi of essential nutrients? I was thinking of trying to increase very gradually (+1ml/day for the first week) the daily intake of liquid fertilizer to see if things improved . Is this a good approach?