Is There Something Wrong with Our Planted Tank?
I didn't know if anyone might have an idea if there is something wrong with our tank or if we have just had bad luck.
We have a 120 gallon lo-light, lo-tech dirted, heavily planted tank. The tank is a little over two months old. The substrate is mineralized topsoil with an Eco-Complete cap. We have Malaysian Trumpet snails for the soil. We have two canister filters. The plants are growing very well. The readings are ammonia-0, nitrite-0, and nitrate-5. This is our second tank but first dirted, planted tank. We keep the temperature around 82 degrees (due to living in AZ).
After a month, we started to add fish to the tank. At one point, we added 5 cory cats and lost 2 of them less than a week after getting them. We couldn't see anything wrong with them and figured that we got bad cory cats.
About 3 weeks later, we lost a pleco. Both the cory cats and pleco were juveniles. The pleco seemed fine until after we did a water change. We used our tap water with a water conditioner. We assumed that there may have been something in our water. That is also what the one person at our local fish store thought.
This morning when we woke up, we realized a fuse was out due to a storm during the night and the air conditioner downstairs wasn't running. The temperature in the tank was almost at 86. We got the air conditioning running again and after a few hours got the fish tank almost back to 82 degrees. Then we found one of our female Bosemani Rainbows dead. She was an adult and we had her for about 4 months. So now we are wondering if that was due to the temperature change or is there something wrong with our tank?
If anyone has any insight, let us know. We haven't had any fish issues with our old tank and now with this new planted tank, we have lost 4 fish.