The-Wolf
Ex-LFS manager/ keeper of over 30 danio species
My wifes Coldwater tank is a little over stocked....okay its grossly over stocked till we build our pond so her tank needs it but I will cut back on mine a bit.
big mick
in your case 10% every 4 days would be what I'd recomend.
whats the matter with you, get out there and start digging that pond



. I do 25% water changes weekly on all my tanks, except my Ram tank, it's a little overstocked so I do 30% with them(the tank also has extra filtration).