Brett, I got my Marco in 2007, 50#'s and all have been through at least 3 acid baths, and some pieces have been through 4. After 6 years and all of those acid baths, it is finally doing what real live rock did after curing, it is processing nitrates. I don't want to suggest you try and give it a good acid bath but if I ever start over, it will be with good quality live rock. I have nothing against dry rock, but after having used both live and dry, there is just no substitute for good live rock. I have never had an algae issue other than Valonia and I do believe in the acid baths for removing the outer layers of the rock and whatever may have adhered to it. I did seed my Marco with some live, but if I had to do it all over, it would be with 100% live and I would probably go with TBS.
I wish you luck and if I were still close, I would gladly come help.
I wish you luck and if I were still close, I would gladly come help.