Cinnebuns Posted March 6 Share Posted March 6 Ok, I've asked dozens of people what the issue is in this tank. I thought I had the solution and was worried it would cause issues with the shrimp. It seems I was right because now I've had 2 deaths in 2 days when I haven't had any deaths in months. One death was a berried momma. Maybe someone can figure this one out finally. I might have to beg the apartment complex to let me use the RO system I have that they keep putting off giving me permission to use. This may get long because I want to give full info... This is a 10 gallon tank which contains blue dream shrimp. I also use it to hatch panda cory eggs so it always has eggs and young fry in it as well. The fry get taken out when they get full finage. It originally was bare bottom but has had a black sand substrate for about 4 months. The tank has been setup about a year but it has held shrimp for about 9 months. Shrimp and fry have both been thriving up until now. The PH, KH and GH in this tank is higher than is normal for shrimp. Part of that is because the source I got the original shrimp from kept them even higher. He kept them at PH = 8.2, KH = 14 and GH = 16. I actually deliberately sought out someone keeping them in higher than usual parameters to make it easier on me since I've yet to get permission from my landlord to setup RO (grr). My tap is PH = 8.2, KH = 14 and GH = 21. Nuts and bolts. To lower the GH I age the water and take only water off the top. The source water is PH = 8.2, KH = 14 and GH = 14. The problem has mostly been with plants. Almost all die in the tank pretty quickly. Whenever I introduce plants, including duckweed and other easy plants, I get a spike of brown algae around the walls. Then the plants slowly die away. I used to have a very large portion of flame moss in the tank which is still around, but slowly going away. I have also been able to somehow keep a hygrophilia, which I keep forgetting which kind, alive in there. It's not growing much if at all though. I was able to get some growth once from it but not since. After trying to figure out this issue for awhile, I realized the KH was being depleted in the tank. Possibly from the shrimp? Although the KH added to the tank is 14, it was testing at 7. In addition, the PH wasn't changing at all and staying at 8.2. I don't have full understanding of the issue here but after talking to many people I decided to add a small amount of crushed coral. I was worried about it then making the GH and PH rise so I tested many times since. Just before adding the crushed coral I had to do a few water changes over a few weeks. I had a population boom in the cory fry which caused ammonia, nitrite and nitrate to spike. At no time during these water changes did i lose any shrimp but I did lose fry. Those water changes are why the KH is higher than the 7 I found a few weeks previous. Here's a list of the readings I've done recently: 2-22-23 PH: 8.2 KH: 10 GH: 14 Water change 2-23-23 PH: 8.2 KH: 11.5 GH: 14 2-26-23 PH: 8.2 KH: 11 GH: 14 3-3-23 PH: 8.3 KH: 9 GH: 15 3-5-23 PH: 8.3 KH: 9 GH: 15 As I feared, the PH and GH are going up but only slightly. I have noticed no brown algae at all, which previous weeks there had been, but now I'm seeing shrimp deaths. Part of me is worried it's because of the GH. 14 may be acceptable but 15 not. I however am not entirely convinced the deaths were from a failed molt. I saw no ring of death which, from my understanding, is the indication of a failed molt. So, where does that leave me for both the plants and the shrimp? Is it RO time? Is aging the water having some sort of negative effect? Should I take some or all of the crushed coral out? Idk if I forgot any details of this tank's story but if I do I'll update it. I tried to be as complete as possible. Pic 1 is the tank Pic 2 is how much crushed coral I put in Pic 3 is the berried momma right after I discovered her dead. 1 Link to comment Share on other sites More sharing options...
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