Ah thanks for clarifying for me 👍Very typical Staghorn algae 🙂 Luckily one of the algae most people agree on the cause of: too much organics/dirt/decay in the tank. Increased maintenance and WC, with some mulm removal and pruning of old leaves should do the trick 😊
For fertilizer usage and this algae I haven't personally seen any trend whatsoever, people seem to get it no matter if they dose little, medium, or a lot, so I wouldn't be looking at that.Could it be related to adding too much fertiliser. I’m doing EI style dosing with weekly water changes?