Have you seen any algae?
I have not.
Yes, as long as the GH is well balanced, eg, some Ca and some Mg, not just all Ca like many tap water sources.
GH booster I dose adds about 3ppm Ca+ and 0.7ppm of Mg along with my tap which is about 1-2 GH.
I add GH booster 2x a week. This has absolutely NOTHING to do with algae presence. Low, high, it does not matter. If anyone that says that is does matter regarding algae, I'd look for advice elsewhere real fast.
The success and the plant growth has virtually nothing to do with some specific dosing routine.
I can dose more/less and still have the same result. I can dose 2-5x more of most any nutrients without any adverse effect. I can likely dose less for a few weeks be okay also.
What is the trick? Simple: good care.
Light and CO2
Keeping things clean regularly
In this respect ADA is no different, they do the same thing there.