Hey guys, this is my first post here and I hope its not too painful. I have searched the internet looking for my problem but cannot find a solution. Heres the story, I built a plywood tank around 1 year ago, I lined it with liquid rubber and so far its been awesome, no leaks no problems. After 2 months of cycling just to be safe I added my discus and cherry barbs. Since that time I have acquired more fish including a rope fish, a guinean bichir, black knife ghost fish, bristle nose plecos, and some clown loaches. I have been told by some of the people in my aquarium club all these fish are pretty gentle and should not be an issue. Now to the problem. Since day one of putting these fish in the tank they have slowly started loosing fins (almost like fin rot) but I just cant put my finger on it. For example, my cherry barbs have had hardly any fins for 6 months now, its not killing them and they are happily eating and it never seems to get worse or better. The discus look decent, of course the biggest of them all has the best looking fins and I understand that there can be a pecking order. The rest are good but not great. The guinean bichir looks amazing as does the rope fish. Now this is where it gets confusing to me, the clown loaches are the newest fish in the tank, I bought 3 and they have been in the tank for around 2 weeks now, 2 of them look flawless while one is loosing his fins. Has anyone ever seen this, im beginning to think its the tank but I cant understand why? Any help is appreciated, Thanks in advance.
tests are as follows:
PH - 8
Ammonia - 0-.25 ppm (cant really tell but lets just go with .25)
Nitrite - 0 ppm
Nitrate - 20 ppm
tests are as follows:
PH - 8
Ammonia - 0-.25 ppm (cant really tell but lets just go with .25)
Nitrite - 0 ppm
Nitrate - 20 ppm