Blue light and diagnosing tank problems.

[jeffww]

For some time I was running a bluer tank to see if it would slow algae growth (it didn't, but I handled the problem with a stiff tooth brush in the end). However, what I noticed is that it was very hard to tell if my corals were healthy and where exactly algae was growing in my tank as it would look very brown or black even. The corals in turn would always be ridiculously fluorescent and the exaggerated shadowing made identifying bare patches on my corals very difficult.

Since then, I have went back to my preferred ~12-14K spectrum but am wondering if other users just turn on their whites to do check ups?

 

[Bpb]

I’m a firm believer that algae is not a results of lower kelvin lighting. Algae is a result of inefficient/ineffective herbivore activity. You can have a tank full of hair algae with undetectable N&P and only royal blue LEDs. You can have zero algae using 6500k halides and highly elevated nutrients