Hi Guys, I have 20 odd DAS and 20 odd RNS. Just wondering what parameters you keep your aussie natives at please? Im reading so many different parameters on the Web. I suspect I'm too high. I'm on rain water and I have crushed coral in my tank as naturally my water is ph 7, GH 0-1, KH 0-1 (so low that my API test is already yellow/green on the first drop. My rainwater has a TDS of 7. It's pretty close to RO water! My temp is set at 27 and I read some websites saying that's fine and some are saying too high. I can slowly bring it down as I'm set up to an inkbird. So my tanks parameters are ph- 7.4, Ammonia 0ppm, Nitrites- 0ppm, Nitrates- 0-10ppm, GH-5, KH- 3, TDS- 150-187 roughly in that range. I do have to raise my GH slightly as the crushed coral wasn't enough and I have been using seachem aquavitro GH+. Im thinking I'm way off but that's what a lot of websites had said go DAS and RNS. I have the ability to reduce it slowly if it's needed. My shrimp are really happy, not showing signs of distress. I also have 10 baby delicate blue eyed fish (aussie natives) and a baby bristlenose pleco. He'll be moving onto a 235L community tank I bought, when he gets a bit bigger. Anyway, helllppppp!! Am I on the right track or do I need to reduce? I can slowly take away the crushed coral and do 10% water changes over a month or 2 if too high. Thanks guys!