Hi everyone, I have a 600l African cichlid tank which runs pretty smoothly most of the time. I have sand substrate, plenty of rocks, two cannister filters and do a water change every week. Earlier this week I woke up to find a normally healthy frontosa dead and a dying aurora who didn't survive. we did a water change and everything tested up fine. Ammonia, nitrate and nitrite 0, pH 8.2. Water temp 24c. our lemon cichlid also looked worse for wear along with quite a few other fish who recovered nicely with the water change. The lemon cichlid hasn't however, he's a bit sluggish, panting with funny white ?spikes around one gill cover. Photo below. Any ideas? Very difficult to pull fish out of this tank due to rocks. Another blue peakock isn't well with clamped fins, hanging out at the top and generally unhappy with a raw area by his fin
Sorry it won't let me upload another photo, as it's too big I think?