New fish keeper here. Tried doing as much research as I could, but still hitting bumps.
Woke up this morning before work to see one of my corydoras has a white spot behind it's eye (see attached picture). This is in the community tank listed in my profile. I thought it was fully cycled (I used seachem stability for as long as the pet store told me and then they tested my water and said it was cycled). Found out after buying fish that it was not. Since then I have mostly gotten my parameters under control, have been dosing with seachem prime and aquavitro seed (was told that was better than stability) daily.
1) Black corydora (female?) has developed a white spot behind her right eye (see attached picture).
2)Tested my tank last night and parameters we're as follows.
pH: 6.4 (this seems to slowly be dropping by 0.2 every two weeks).
Nitrite: 0 (has been 0 for the past week and a half)
Nitrate: 0 (recently dropped from 5 to 0 and seems to enjoy holding steady).
3) Tank is 29 gallons. Tank has been set up for About 3 weeks.
4) Filter is a tetra whisper IQ 60 with a prefilter on the intake. 300 gph
(I do not have the flow control turned up all the way). I also have a aquapapa bio sponge filter in there that says it's for a 5 gallon tank.
5) There are 3 black corydoras and 20 endlers in the tank.
6) I did a 5 gallon water change on Friday the 11th. I vacuumed the gravel where I put the food, but can not get into smaller places around the dragon stone and under Driftwood.
7) I have had the corydoras for about two weeks and the endlers for a week.
8) Nothing new has been added other than what's been listed and dosing with prime and seed.
9) Feed the corydoras hikari sinking wafers and have been switching between Bug Bite flakes and Sustainable Aquatics dry hatchery diet.