No i havent seen that one yet. If I black out the tank as well, will my corals mainly my remaining sps be ok? For how long lol..

Also my wife and I moved into my parents to save up for a down payment.. so space is non existent to set up buckets all over for cooking the rock. Would moving the rock to the sump blacked out with regular water changes serve the same purpose?

Well if you plan on manually removing the HA doing it in your sump is alot better than disturbing your display. You will still have whatever it is that is leaching out of your rocks happening. But it is a good start. Someone mentioned earlier about emerald crabs but your best bet would be a seahare if theres someone in your area that you can borrow one from.