Hello all! I joined this forum in hopes I could find some help for my poor tank...
For the past several years, I have had a ten gallon tank with four tiger barbs and a striped raphael catfish. The tank's light recently quit, and since it was one of those all-in-one tank kits that don't allow you to replace the light, I got a new ten-gallon aquarium. Prior to the replacement, I had an algae bloom in my old tank, and I will admit it wasn't the cleanest of tanks...my gravel vacuum had quit and I was struggling to do a proper job with the siphon. Anyways, I set up my new tank day before yesterday. I got new gravel (rinsed it like crazy), but used my plants from my old tank (rinsed those off, too) and a log-like decor from Petco that my catfish was crazy about. I used tap water in my tank, but the water is perfectly safe for the tank--I had it checked recently and it's 100% fine. Slightly basic pH, but I've been using that water for years no issue.
I set up the new tank, and transferred the fish immediately since I discovered that the old one had started to leak...the fish seemed okay, but the catfish didn't hide like normal. The next morning everyone was alive, but a little later that day, the catfish died. My kitty cat, who loves to watch the fishtank and was so excited about me setting up the new tank, was devastated. She was literally staring at the dead catfish and meowing dismally. I checked the water, and it was fine, so I assumed that it was the combination of old age and the stress of the move that killed my catfish (he was probably around 7 years old). I wanted to make sure I had bottom feeders in my tank, so I went to Petco and got two albino corys. I also got three red-eyed tetras and a gold inca snail (there was still algae on my plants and decor). This may be overstocking a little, but I felt confident since my tank was well planted and I had good filtration.
The next morning (this morning) the tank was cloudy. I assumed this was a normal bacterial bloom due to the Seachem Prime and Stability I had dosed the tank with. But one of my barbs had died. Again, my barbs were older (4-6 years) and I chalked it up to stress and old age once again. But this afternoon, yet another barb died...again, old...but I'm not quite happy with the old age theory any more. I feel awful that my poor old fish are dying when all I wanted to do was to give them cleaner, safer conditions with proper lighting and no algae bloom. The new fish are absolutely fine, and the snail seems happy too. I tested my water...absolutely dead normal, with the slightest tinge of ammonia (not even 0.25 ppm
Below is a rundown of my tank. An * indicates items/fish that were in the original tank.
Tank: 10 gallon
Fish: 4 barbs* (2 died); 1 raphael striped catfish* (died); 2 albino corys; 3 red-eyed tetras; 1 gold inca snail
Substrate: 5 lbs of white gravel mixed with 5 lbs of "snowy river stones" gravel, with glass accents on top (all well washed)
Plants: 4-5 small anubises*; 3-4 small Marimo moss balls*
Heater: set on 74 degrees
Filter: Tetra submerged filter, rated for 10 gallon, with charcoal filter and a biological filter sponge
Decor: large plastic log thing...* was in original tank no issue
Dosed tank with Seachem Prime, Stability, and pH buffer, as well as a dose of Flourish for the plants. Have used all those before with no issue.
Noticed bacterial bloom, really don't think that would hurt the fish...
All the new fish are fine. It's just my old guys that are dying. No clue what would harm my old guys and not the new ones.
(Testing with API Master)
ammonia: <0.25 (faintest twinge of green)
There is no chlorine or anything in the tap water, besides...treated the water...and why is it only affecting the old guys??? I'm installing a bubbler tonight and we'll see what happens.