Hi. We bought a used tank that came with the 3 goldfish and common pleco that the guy had. He gave us all the cycled media. The only thing we changed was the substrate, from pink gravel to black sand. All 3 goldfish have little speckles on their cheeks. The man said he “treated them for ich” who knows what that means or if he even knew what he was doing. One of them has a bit of a fuzzy white grainy growth on her fins. I’ve been doing weekly water changes. I am guessing this has to do with something the fish came to us with?
Tank size - 75 gallons
Stock - 5” oranda, 7” wakin, 4” ryukin, 8” common pleco (sizes are estimated)
Parameters - ammonia 0, nitrite 0, nitrate <20ppm, PH 7.5
Fx4 filter
There are some pothos and monsteras on the top of the tank, with the roots soaking up the nitrates. Other than that it’s empty to just give them space. Black sand with larger pebbles. We’ve had them three weeks now. Thoughts? I havent added any medication to the tank, I know better than that!
Tank size - 75 gallons
Stock - 5” oranda, 7” wakin, 4” ryukin, 8” common pleco (sizes are estimated)
Parameters - ammonia 0, nitrite 0, nitrate <20ppm, PH 7.5
Fx4 filter
There are some pothos and monsteras on the top of the tank, with the roots soaking up the nitrates. Other than that it’s empty to just give them space. Black sand with larger pebbles. We’ve had them three weeks now. Thoughts? I havent added any medication to the tank, I know better than that!