It's very hard water were I live, it's chalk land. I would guess it's around GH15-18. The plants I have are growing fine, had them for 6 months. But I've been using a lot of fertlizers, more or less the same amount as I used when I had a fully planted tank with ADA substrate etc.
I've always had a big issue with diatoms, since I ever started with planted tanks 2 years ago. No other algae problems. And I was hoping by having a low maintenance, low fertilizer regime it might help a bit (light seems to have a big impact on it's growth, the lower PAR the less diatoms).
This is why I wanted to find out if I need to dose with or without Macro's, if I can dose much lower when I have these type of plants and setup?