Crabby Posted August 17, 2021 Share Posted August 17, 2021 I did a major clean and a 50% water change on my CPD tank yesterday, since I’m trying to fix up my nano tanks this week. I’m not sure what part of this process (which included splitting and replanting some portions of HC) caused my substrate to do this, but some of the balls on the top layer have gone a grey-white colour. What is this??? For reference, I am using Oliver Knott x Pisces ‘AquaEarth’. I’ve seen it do this once before after I moved the tank from my old house to this house, and I can’t remember how I got it to go away. I’d really like to make this go back to normal, so my tank can be beautiful again. Right now I don’t just have the substrate problem, but my tank is cloudy, and a bunch of detritus has settled on all my plants and rocks, which is infuriating! And I can’t do a water change to get rid of this because I just did a 50% one yesterday, and I hate messing with my water to this extent. Also, I think my CPDs are getting ready to breed (as I type this I’m seeing two fish dancing in circles around each other), so I want to make sure I don’t unsettle them by having the tank in such a state. Any advice on what is happening, why it’s happening, and how to fix it would be much appreciated! By me and my fish. Note: my phone has slightly over saturated the last picture. It makes the tank look kinda nice. I wish it looked like this, but just imagine that the water is a bit milky, the plants are covered in brown detritus, and the substrate on the right side looks positively grey. Link to comment Share on other sites More sharing options...
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