I hadmy cacutfor over a couple of weeks and i am wondering I woke up looked at the cactus and the needles are brown just some of them and in sted of being strat and yellow they are brown and going in different direction I have 1 flourisint light 20watts over and some other cp's, never one had I had a cactus did it turn yellowneedles into brown I bought it from English Gardens they said its in dorment, this cactus hasme consirened I have not had a cactus in a long time and mybe i am watering wrong how much is inof, I don't know hat kind of cactus it is I have not grown them i a while it has yellow needles sticking out of what looks like little balls of cotton and its green with lighter green in some spots does that help. Please tell me Whats wrong is this normall for this kind of species?