Manually removing as much as you can is a good palce to start. Decreasing the amount of time your lights are on, or keeping them off for a day or two will help reduce the amount of algae present. Since this is a new tank, it may just need some time to mature. Your bio-load is pretty high for a younger tank. The algae blooms may go away with time. For now using RO
water, not overfeeding or overstocking, and keeping NO3
down will prevent/limit future out breaks. Running a PO4
reducer will help as well. They are a little costly, but well worth it. The media, like Rowaphos for example, last fairly long(months) and works great. I would highly recommmend using it, especially in a new tank.