Yep. I am really trying to avoid running actincs, trying to keep power usage as low as possible.
I thought about running 3 175 10k and 3 175 20k, it would probably give me a good balance, but I already had 2 of the blueline setups for 400watt.
On my big work tank I am running 4 1000watt 20k and 4 400 watt 10 k and it looks great.
I had also tried adding 2 4ft actinics on my 120 which has the 2 400 watt xm 10k on it now, and you could not tell any difference.
So, I would have to add 4 6ft actinics to the 180, and am still not sure it they would make a big enough difference with the 10k.