Join Date: May 2005
Location: edmonton, alberta, canada
There's nothing wrong with the type of lamps you're using. It might help to run one set for 8-10 hours and the other set for an extra light spike for 2-3 hours in the middle, as 4 x 35 watts all day seems pretty intense even for a 40 with CO2. Also, look around on the algae section of this forum to identify what you've got and how to eradicate it.