Yes, I've learned it the hard/expencive way. I bought a big skimmer first, it skimmed a lot when the tank didn't had any macroalgae. When I densely planted the tank I saw that the skimmer almost skimmed nothing. Seemed weird at first. Now I swapted my skimmer for a better lightning.

Tom, do You (or someone else) know how much algaebiomass that can support say 1 cm of fish. By support I mean that can remove N and P from fishfood. Is it like 1 kilo of macroalgae in wet weight for every single clown fish? or for two clown fishes?

Really appreciate you taking time for answering such simple questions!