Hello Martin,
My experiences are (RO-water plus peat and leaves, wood. pH 4.5-5, cond. 20-30):
Without micronutrients: Javamoss is uneffected, Javafern and Anubias shows nekrosis; Vallisneria stops growing, Salvinia, Limnobium and Lemna shows yellowish dwarf leaves, green algae starts growing. After adding tap water – no effect. After adding micronutrients – plants are growing well, algae died very fast.
I dont think I can add micronutrients with leaves, because the leaves do not decompose over years! in my aquariums.
Water changes: I do not want to avoid water changes in general, I want to avoid big water changes. I prefere to change water once or twice a week, but only 5-10%.
Martin, you say you tell us your peronal opinion, I would say it is not only an opinion. We all have (and need) our own personal way to handle our aquariums, because our visions of “the blackwater aquarium” are different and they depend on our personal taste and experience. My method works in my aquarium, perhaps not in yours or Peters. So it is very hard or perhaps impossible to create rules in aquaristics. But we can inspire each other and therefore this is a very good discussion.
greetings
Patrick