I have a tall 30g reef tank measuring 21" with some nice corals I just got 2 weeks ago. I right now have a Aquatic Life 20" 2 bulb (1 white, 1 rose colored) lamp I beieve T5 but meant for freshwater.
I have been told I need a stronger light for corals.
What would be a good light to get that is not over $100 or how can I upgrade this current lamp? I am including a photo of my tank.
I was looking for a strong but cheaper LED
Also, I just recently had some brown algae grow on my sand. How do I get rid of it? I know it has to do with silica in the water I add. Thanks.