Thanks, Diesel. I used dry rock when I started my tank and initially soaked it in LaCl. I got impatient, didn't wait to get zero readings, and put it in the tank. I battle GHA issues on the rocks for a while, and eventually did what Mike described. I removed about a third of the rock, soaked it while dosing it with LaCl, returned it to the tank, and had great results. I haven't had issues since then.
I have also researched using it on a day to day basis instead of GFO. Personally, I use an algae turf scrubber, but I was curious. It seems that if dripping LaCl into a filter sock is executed correctly, then people have had great results for a fraction of the cost of GFO. The biggest issue I think most people ran into was that it stripped their tank of too many phosphates, if anything. Anyway, that's neither here nor there. I just wanted to know what all the hype was about over acid baths. Thanks for he feedback