I did ask this question and she has not got back to me with numbers but here is what i think is in there from what else she said...
Also in the tank are neon tetras and swordtails. I'm not sure what else he has, but he says all the fish excepot the mollies and gouramis have been 100% healthy throughout the several months he's had the tank.
I dont know what size the tank is etc so i asked and am waiting for a reply

Aimee