Hi, I joined this forum a while ago and downloaded tons of really useful information. Thank you to everyone who contributes and all the great knowledge that is in here.
My 20 gallon long tank has been running for about 6 months now and I have been carefully monitoring my cycle and it has been very stable, finally, for the past month or so. My ammonia level is never more than 0.25 and Nitrite levels do not even register. My nitrates were very high in October (40+) but have now fallen to 2.5 or so. I built and activated a drip de-nitrator about 8 weeks ago and I suspect it is starting to help. My ph levels are around 7.2 and I now change 2 gallons of water each week. I was changing 4 until the nitrates came down.
The tank is planted with 6 small live plants that are growing slowly. Green algae overall is light to moderate.
Recently I have started losing multiple fish. One chinese algae eater, a rather senior pleco I adopted from another family, and a bamboo shrimp. I have had a school of 4 neons living in the tank almost since I started. Last Sunday I bought 4 more neons because I particularly like them and felt greedy. I also bought two small tiger barbs (which I just read online are going to be aproblem when they grow up). On Tuesday 3 of the new neons had died. Now tonight one of my original neons was dead.
In none of the cases do the bodies show any evidence of a struggle such as being attacked. They are normal weight and just dead. It seems to happen at night, but the most recent neon died between this morning and tonight.
The tigers I brought home on Sunday are doing fine, and none of the fish that died showed any earlier symptoms. They were all doing their things and then they weren't.
I add stresszyme each week, use neutral regulator 7.0 because we have VERY high ph from our tap water, and have airstone aeration as well as filter flow.
1. Size of aquarium (# of gallons)
20 gal long
2. Is your aquarium set up freshwater or saltwater?
3. How long the aquarium has been setup
4. What fish and how many are in the aquarium (species are important to know)
4 neons (surviving) 2 red wags, 2 serpae tetra, 4 glass tetra I can't identify, 1 chinese algea eater, 2 tiger barbs.
5. Are there live plants in the aquarium?
6. What make/model filter are you using?
7. Are you using a CO2 unit?
8. Does your aquarium receive natural sunlight at any given part of the day?
9. When did you perform your last water exchange, and how much water was changed?
4 days ago, 2 gallons. Changes usually 2 - 3 gallons depending on evaporation and nitrate levels
10.How often and what foods do you feed your fish?
Flakes, morning and evening. Small amounts each time, less than 2 minutes to consume.
11.Is your aquarium light incandescent or fluorescent and how often is it kept on?
Flourescent, 30 watts, 14 hours per day on timer
12.What specific concerns bring you in with a water sample at this time?
I hope you can suggest some things for me to try. I don't know if this is a water / disease problem or compatability, or the butler in the kitchen with a pillow.
In any case, I hate being the grim reaper each day.