the tank size is 125 gallons, tank mates are 1 pleco catfish, 1black ghost knife, 20 guppies, 6 swordtails, 15 glolight tetras, 50 neons, 15 harlequin rosbaras, 3 corydoras, 3 albino algae eaters, 5 platys, 2 dwarf gouramis, 4 gouramis (not including sick one), 1 angel, 4 blind cave fish,
yes i use dechlorinator, i also use plant chemicals
also, he and 1 other gourami were the latest addition to the tank