I've had a female Christmas Fulu holding for about 2 wks. now, and haven't set up a tank for her to spit the fry in yet because I've been so busy. Finally got around to it tonight, put in a sponge filter that's been in and out of various tanks for about a month now, and even longer before I bought it with a used 15 Gallon. Is it safe to put her in now, or how long should I wait?