hi, i've got an URGENT request.
i'm new to the guppy world and i've been doing alot of reading and have recently bought some guppies. i live in singapore and i bought a bag full of guppies at a market because i really felt they deserved better. i guess in total there were about 25-30 in the bag.
i bought them a large plastic aquarium, water plants, a filter and oxygen pump. the current isn't too strong an they seem very happy.
ive got two problems..
i came home today to discover that two of my guppies, (females i think

) have suddenly grown a ball of mold on their sides, it appears to be fluffy and its white. i'm really worries and i think they're going to die.
ive sperated them from the rest.
i think i need to treat all fish to prevent more from dying. is there any hope for my two fish??? i really need a fast reply
also, over the past week that ive had them, about 6 fish have died. is this due to stress? or the fact that i don't have a lamp?
i would appreciate any help i can get. i really want these fish to be healthy and happy.
i already have some fry as well, about 15 in the past 2 days, ive seperated them from the adults in a seperate tank, also with a plant, and an oxygen pump. it was rather unexpected so they don't have a filter, any tips on feeding them? or ensuring them a healthy future?
thanks in advance, i really appreciate any help.
Tanja.