Tank size and setup:2 1/2 ft by 2 ft
[b]Substrate:bare with little gravel
[b]filtration (Internal, external, flow rate, last cleaned and what it was cleaned in):internal in built corner filter, one sponge filter
[b]Airstone/sponge filter etc: yep
[b]Inhabitance:3 abn i pair standard bn breeding pair, maile is in trouble
[b]Fish affected by issue (all/bottom dwellers, all bristlenose or a single fish etc):male bn
[b]Feeding system (what, how much, how often):algage wafers, cucumber, peas once a day
[b]current water change system (before illness appeared): every second day 15%
[b]water changes made since illness appeared:none
[b]As many levels as you know (ph 6.6 all others within parameters
[b]any chemicals used (including carbon/chemical fitration inside the filter)none
[b]water source and treatment:rain water, with stability
[b]Major changes in the last 3 weeks (new fish, new plants, new anything or changes):2 lots of fries by the same male and cleaned out the inbuilt filter's filter wool
[b]Symptoms (gasping, not moving, bloated, spots, wounds, stressed colours etc):sitting by sponge filter outlet, not much movememnt and not eating and a slight gash on belly body appear to have slime and bristles down and body with some yellow raised beads, spots