I need help!! I bought a beutiful pair of chocolate marble angels and have waited for what seems like forever for them to lay eggs....actually it took about a month. Anyways, 2 days ago they layed their eggs on the heater..another angel started eating their eggs so i removed all f the angels except the pair....but to my dismay, my very large pleco went up the heater and ate all of the eggs!!! They are in a 55 gallon and now it is just the 2 angels, the pleco, and a red tailed black shark...what do i need to add or remove from this tank to improve the chances of their next eggs, and does anyone know how long it will take for them to lay eggs again??