We use both live phyto & reef roids. We dose 100ml daily for phyto. The recommended amount that seemed consistent online is 5ml / 10gal 3 - 4 times per week. Our system is around 425 gallons, so 100ml daily is a good target. We worked up to this amount over a few months as we figured out how to culture at home. We are also using phyto to culture copepods to round out the food chain.
We also target feed with Reef Roids every 5-7 days. Not all of the corals have the same feeding response, so some we are skipping. Zoas, our SPS & one of the mushrooms really respond so we will continue.