low light coral

So I have a tank with high end lighting on it that all of my coral are in and everyone is doing great. I just got a 29 gallon LED tank kit for an unbelievable price and was going to do this as a fish only tank because I know tank kits usually don't come with strong enough lights to do anything...

Hello, I’ve been setting up this nice little coastal reef I’ve got all the macroalgae sand lettuce added to it that I was interested in putting in now just really letting it grow in more. Anyways my question is does anyone have experience with photosynthetic sponges? I’ve been considering one...