DonkeyCheese
Aquarium Advice Apprentice
- Joined
- Oct 14, 2021
- Messages
- 12
Corydora keep dying. Only having problems with the cories. First time I lost 2 after being in the tank for about 3 weeks but that was from them getting stuck between rocks so I redid the scape. Another time was a loss after a stressful egg laying session. Another time was the runt of the pack who probably got bullied/stressed. Another time no clue. I try to maintain a group of 12 but never seems to work out.
Well established heavily planted 90 gallon tank with sand bottom. Plenty of nooks/crannies/hiding spots. Probably a good 3 or 4 inches of plants to every inch of fish. Angelfish, keyhole cichlids, black neons, and tons of snails all of which are very happy and never lost any of them over the life time of the tank. Well, 1 neon got wedged behind the heater but that’s his fault for being dumb. Running with plenty of filtration and on top of maintenance. Temp running76-77. I have 2 air stones in there as well. No chlorine and no ammonia issues. Ph arguably between 7 and 7.4 depending on who’s eye but regardless it stays consistent which is what matters. Nitrites are zero and nitrate doesn't go above 10ppm or below 5ppm. I do small water changes, usually two per week, 3 if it really needs it but not often. Never been a fan of 1 large water change. In my opinion I think it helps with overall tank stability with a less drastic change in conditions like a large one does. However, if something catastrophic happened and the system was crashing then larger water for sure.
They eat whatever the big guys miss but they also get their own food and a variety to boot. Omega sinking shrimp pellets, hikari algae wafer, bloodworms, bug bites. They get some during the day when the other fish are fed but I also come back to give them their own food right before it’s lights out.
What can I do to possibly correct this trend?
Well established heavily planted 90 gallon tank with sand bottom. Plenty of nooks/crannies/hiding spots. Probably a good 3 or 4 inches of plants to every inch of fish. Angelfish, keyhole cichlids, black neons, and tons of snails all of which are very happy and never lost any of them over the life time of the tank. Well, 1 neon got wedged behind the heater but that’s his fault for being dumb. Running with plenty of filtration and on top of maintenance. Temp running76-77. I have 2 air stones in there as well. No chlorine and no ammonia issues. Ph arguably between 7 and 7.4 depending on who’s eye but regardless it stays consistent which is what matters. Nitrites are zero and nitrate doesn't go above 10ppm or below 5ppm. I do small water changes, usually two per week, 3 if it really needs it but not often. Never been a fan of 1 large water change. In my opinion I think it helps with overall tank stability with a less drastic change in conditions like a large one does. However, if something catastrophic happened and the system was crashing then larger water for sure.
They eat whatever the big guys miss but they also get their own food and a variety to boot. Omega sinking shrimp pellets, hikari algae wafer, bloodworms, bug bites. They get some during the day when the other fish are fed but I also come back to give them their own food right before it’s lights out.
What can I do to possibly correct this trend?