Yep fo optimum colour use all 4
Power trace is like the contrast on your TV, providing your system is of low nutrient and healthy then the 4 traces will boost the colour brightness conciderably, then just adjust the dose to suit your colour requirements.
Available right now at
www.oceanaquatics.com
or
www.progressivereef.com
These are your two closest, other than that ask your local LFS to call us and we will supply him for you happily. Just get them to cal me on Monday they could have your order by the end of the week
