@mcarroll is a bad man, he didn't let me quit the hobby last time. All kidding aside, he's always been a great help. I have done the manual dosing of NO3 and PO4 for over 3 weeks. But towards the end my patience was running low. However, I should admit, when the GHA started coming back, 70% of my rocks cleared off Dino. So yes, manual dosing is an excellent solution, but you have to be on top of this everyday. If you miss a day, technically you'll have to restart. At the end I just couldn't keep up with it.If you have had a low po4 and no3 than micro diversity is also lacking . Seeing hair algea back is a good sign. Restoring the missing diversity will also help. @mcarroll is also a big help and a wonderful resource