I am having issues with my yellow cichlid. I have him in his own 25 gallon tank, all alone, and have had it that way for 3 years. Not much experience with fish but everything has been going well. All water levels are good. Weekly to bi-weekly water changes. the last few weeks we have had a really cloudy tank and it won't clear. Cleaned everything, and changed water (always use spring water), but can't fix it. Now my fish is getting really dark and he is not happy. He is still eating, but not happy!!!!
No one can help me? I have never had a problem until now. i don't have much experience with the whole fish world.
i had hoped someone would give me some advice.