genuine_red Posted September 6, 2020 Share Posted September 6, 2020 Today I lost all but six of the fish in my 12 gallon tank. All 15 green neons went literally belly-up within 3 minutes as I watched in horror. I'm also missing one of my three dwarf chain loaches. So that's 16 of 22 of my treasured fish. Here's what happened. I purchased three sword plants from an online seller that I've bought from many times. They were the usual gloriously beautiful and healthy plants I've come to expect from this seller. Regardless of that, I'm still not stupid enough to not wash the plants, which I do by cleaning them under running water, trimming any questionable leaves and roots, then letting them soak in clean water. I didn't use any cleaning products, just water. I really don't think the plants were the culprit. Before planting them, I pulled up all the plants they were replacing, then did a thorough tank cleaning/water change. I did a gravel vac, removed about 2/3 of the water, and cleaned the HOB filter in the used tank water as always. I then planted the new plants and added some old Eco Complete to cover the roots*. All fish were lively as I cleaned, and curious about the new plants. * (This was extra substrate that had been rinsed a few months ago but not used. It was sealed in a ziplock bag with most of the air pressed out. It may be important to note that it's not the same substrate used in the rest of that tank--Fluval Stratum.) Then I refilled about seven of the eight displaced gallons with tap water (which I always use) with my python hose. (At this point, the fish were still okay, playing in the incoming water stream.) I could not immediately access my dechlorinator during the refilling (it was in a bathroom that was in use), but I thought "What the heck, I remember a YouTuber saying he doesn't put in the dechlorinator until after a refill and he doesn't have any problem." I mean, it was only about seven gallons ... Then the horror ensued. I turned off the tap and when I came back in the room, I discovered one green neon swimming upside down then another then six then ten then all of them. I immediately retrieved the dechlorinator and added it to the water. There were about five of the neons still twitching, which I gathered as quickly as I could and ran them to my very clean plant grow-out tank. They didn't make it either. I'm just heartbroken. I've had those beautiful little things for about 10 months, never losing one of them. I got them through a stubborn bout of ich, made drastic changes to the aquascape in their tank, and they were not bothered by the cyanobacteria outbreak last month that cleared up quickly with the use of a UV sterilizer. I don't know if the old substrate could have been tainted or moldy. It looks and smells fine. In total I only used about 1/2 cup of it. If it wasn't that, could it have been the chlorine? Neither the dead fish or the survivors (two dwarf chain loaches and four honey gouramis) look to have red gills. Poor little things. I haven't flushed them yet and some of them are still bright colored and their eyes are still lit blue. This morning I was excited to add my new plants to fill out the blank areas of that aquarium. Now I just wast to break it down. 6 Link to comment Share on other sites More sharing options...
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!Register a new account
Already have an account? Sign in here.Sign In Now