I'm wondering if I should switch from LED
to metal halide lights for my reef? I'm not seeing much progress with some SPS
I've got a 20 g tall that I'm currently using as a 'nano' reef.
It's doing great in that there is slight growth and everything is healthy and stable - it's been in a routine for about 7 months now (wc
every friday, spot feed every tues and thurs, feed fish EOD).
The parameters are all stable, although I haven't been able to get my pH above 7.9~8.0.
I am not seeing a lot of growth, and anything SPS
is not doing much of anything at all.
I have one digitata that is growing VERY slowly.
My monti, chalice, and acro are literally doing nothing.
I haven't seen any growth in 7 months (aside from slight coloring or polyp extension after feeding).
The zoas are intermittent, candy canes grow very slowly, and mushrooms/xenias are out of control (as expected lol)
I'm using an LED
mounted about 4 inches above the tank. It's the CAD lghts nano LED
setup... this one:
I don't use a protein skimmer or sump or anything, just 2 HOB
filters (I know, I know) and regular water changes of about 15~20% weekly.
I'm assuming this light is not enough for this big/tall of a tank? Should I upgrade to MH