Sun kissed aquarium

Yeah, i think so too. Never had problems with sunlight causing nuisance algae outbreaks in my tank, only on the glass. But at this point, it was in the freshwater tanks, and had a plecostomus that loved gobbling it up like crazy. But its only beneficial to the coral, might give them some more coloration +1 on the temperature going high, could easily happen i think, but you're from Switzerland right? I have problems here in Denmark with the temperature getting high in the midsummer, where the temperature gets up 31 degrees celsius, how hot does in get down there? Because if it gets that hot, and plus the sun hits the aquarium, it get some cooking going on hehe But, i dont think it will be an issue either way tbh