I'm thinking about upgrading the lighting on my 10G nano. I currently have 33w of CF
(2 white/1 actinic), but the corals I've got aren't doing as well as they could be.
So, instead of letting them wither away and having to buy them again in the future, AND a new light, I'm thinking of getting a new light now to try and get them back on track.
I was looking at this Haqos 150w metal halide one:-
But, with 150w over such a small tank (10 US Gallons), won't it be too much?! Particularly for corals placed higher up the rock? And, what about the extra heat that the light will generate, and algae problems?
The bulb it comes with is 20k, I want a nice bright white light with a hint of blue/actinic, to bring out the fluorescent greens etc. Will 20k be a good colour? I don't want it TOO blue.
Also, will I have to photoacclimate my corals to this new light, with it being so much brighter?