Thats a great tip! I plan on getting an ROW unit for my sink. They're a bit expensive here in the US but it's worth it! I just have to save again lol for now ill just dw in some empty gallon jugs I've been using to refill my tanks. I just purchased the leaves and dewormer so I can hopefully add them soon enough. Oh I also got some pH down. Does dw help lower pH as well?Of course. It is the best natural way to lower any parameters.
Eeither you buy distilled water, or osmosis water at a LPS (then at least in France), or you buy an osmosis machine so that you always have some on hand without having to move.
Once you have the right mixture (aquarium water + osmosis water) you just need to plan this mixture for each water renewal.
Also sheesh I've been dipping my test strips in the water thinking it was fine cuz thats what the instructions said, I'll use a dropper from now on. No I don't use the strips for ammonia test. I have a separate test kit for ammonia that uses a little vial.