let me guess. The eggs "disappear" after about 48 hrs? They are most likely eating them. Blue rams are notorious for it. Normally, I would not advocate artificial hatching of cichlid eggs (generations of artificial hatching are most likely the reason rams are such horible parents), but in this case it might me your only option.
first, you will need a tank with a sponge filter that has been pre-colonized with beneficial bacteria, and a heater (that all you really need). The filter can be "pre-cycled" / "seeded" / "pre-colonized" by stuffing the sponge somewhere in your exisiting tank where some water flows over it. After a couple weeks it will have enough bacteria to handle the modest waste loads created by pinhead sized fish.
You can use this time to practice hatching baby brine shrimp. Google the term for tons of different ways of doing this.
when your're ready for the babies, remove the rock/plant leaf that the eggs are on. Place it in the fry tank with an airstone next to them (no need to add the filter yet). Methyl Blue should be added to inhibit algea growth. Eggs will hatch in about two days. Hook up the filter, and do daily water changes untill blue tint is gone. Feed live BBS several times a day, and do water changes as often as possible (the more often you feed and do WCs the faster they'll grow). Good Luck.
