Tank is looking very nice. Corals are showing good colours too. The Prodibio was and is working great for me. I completely managed to stop using GFO and maintain that over the last 5-6 weeks. I say was because this last weekend I started a Zeo reactor running a reduced amount of Zeolite...so kind of running a Prodibio/Zeovit hybrid system.
My tank is now coming upto 5-6 months and having started from nothing but dead sand and a few branch and plate rocks, along with a litre or two of Siporax, some of the corals (mainly the aquacultered ones) are already showing pretty impressive colours for me in a tank thats less than 6 months old.
As on previous setups, whenever I've used Prodibio, apart from some minor hair algae, I didnt get any other big algae cycles. A small amount of diatoms and a small bit of hair algae and that was it. No Cyanno/Dinos etc. I dont even wipe the glass for a week.
Keep up the fishload, weekly water changes, feed the tank and most importantly; keep the parameters stable and let time do its magic on the coral colours.