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  1. Thanks everyone for the advice. Sounds like I was just overthinking things. All the care guides I read on neons and corys said they prefer soft and slightly acidic water. I’m a bit of a perfectionist so I was trying to get to those ideal conditions. I’ll do the crushed coral and ditch the RO and stick with tap. Thanks again.
  2. So, I'm new to the hobby but I've been researching quite a bit. I'm building a 29 gal. Sand, dragon rock, driftwood, and planted with java fern and anubias (16 plants total), as well as java moss and guppy grass. I intend to keep cherry shrimp (already have 30+ in a smaller tank), 10-12 neon tetras, 6 pygmy corys, a clown pleco, and 3-4 nerites. The tank is already cycled and planted but no livestock yet. Keeping temp at 78 and running Aquarium co-op's sponge filter. My issue has been water parameters. I started out just using tap. Out of the tap, it runs 6dKH, 8dGH, and pH 7.8-8.0. I wanted to lower my pH so I got the Buddy+ RODI kit and started doing 30% water changes every week while it was cycling. Apparently I did one too many because my pH crashed down to 6.2. I've managed to get it back up to 6.8-7.0 by doing mixed water changes with RO and tap. My concern is my kH. Current water conditions are pH 7.0, 7 dGH, and 2 dKH. (Aslo, 0 NH3, 0 nitrites, 20 ppm nitrates - adding NH4CI daily until stocked) I tried adding some sodium carbonate in the form of API's pH UP, and that got my pH up to 7 but had no affect on my KH. I'm worried about my plants and pH swings with that low of KH. Am I right to be concerned and if so what should I try differently?
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