I realize there will be some trial and error involved in this but is there a general formula for how much crushed coral would be needed (lbs per gallon of water) to maintain an 8.0 - 8.5ph in my tank. I'm currently using the buffer Seachem makes which works great but I'm looking to keep the maintenance on the cheap and easy.

I imagine the amount would be somewhat dependent on the type on crushed coral. I read that the Florida crushed coral with aragonite it especially efficient. That's probably what I was going to purchase but I'm open to suggestions.