I cannot beat the Triti guilt! It seems impossible-if I knew what would make them multiply I could beat it, but I don't understand it. All it will say is that it multiplies "when a membrane is isolated". Only problem is, I don't know what that means. I'm on the one with the membranes and the thorns, except that it releases mist/vapor/gas, in case you didn't recognize it by "Triti". Can someone help me?