Jon, DON'T BOIL THE ROCK IN YOUR BEER BREWING POT. Lots of nasties in the rock you don't want in your wort. I don't think 'Aptasia Ale' sounds good at all.
I had a really bad hair algae problem, so I cooked all my rock. I didn't boil it, I just bleached it.
Put rock in trash can.
Fill up with tap water
Dump in 1 gallon of generic bleach.
Wait 2 days.
Take rock out, dump bleach water, rinse everything with tap water. (I used the hose out back.)
Lay the rocks out on the patio for a few more days.
Do a big water change on my tank. Save the old water, and put the rocks in it. Put a spare heater in the water. Turn the heater as high as it will go.
Wait 2 days and do another waterchange on your tank. Change the water out in the rock curing bucket as well. Then add a few chunks of cured LR to seed the cooked rock.
Wait a week, and move it into your tank. If you have a LOT of cured rock in the tank, you can start and move the cooked stuff bit by bit into your tank.
B