Its 6 in one hand, half a dozen in the other. It could lead to algae problems, then again, it may not. You will get better spread with the 2x20 and less chance of algaeif nutrients get a little out of whack. You will be able to grow more types of plants with the pc fixture but increased lighting means everything else has to be in better order. Less room for error with more lighting.
__________________
For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow.
Member of the AGA (Aquatic Gardner's Association)
Member of the IBC (International Betta Congress)
|