Talk me out of UV

[Lavey29]

This is from four years ago during initial set up. On there on the top there’s a annoying bacteria bloom that wouldn’t be such a big deal in a smaller tank and on the second picture 24 hours later once I turned the UV on.

Beautiful huge built in peninsula

 

[Stackrat]

You do all realise that some members of this forum live in the UK and yet you still talk openly about "the sun"? I find that disrespectful. Shame on you.

 

[Tamberav]

Park your tank next to a bright open window and let us know how that natural UV works out for you.

Not related to the UV discussion but some people do this, some have skylights for the tank

I believe the limiting factor becomes nutrients to keep algae under control in those or perhaps just a lot of herbivores.

This one comes to mind

Adee’s reef is a sunlight driven beast from South Africa | Reef Builders | The Reef and Saltwater Aquarium Blog

Although we spend hours covering the latest lighting fixtures here on Reef Builders, nothing really comes close to actual sunlight. Adee’s aquarium is a 1340 L (355 G) reef, measuring 2oocm x 1oo cm x…

reefbuilders.com

Again not related, I don’t think a skylight is the same as a UV sterilizer.