Just got logged on to join you guys in this forum. Member of another forum but WOW, not to fair with members. Now about me, Wanting to upgrade dt to leds from cf's 25 gallon tank with 10 gallon sump copy of water fall ats, L2 version but smaller Led's (4 660 nm and 1 450 nm) on each side screen size 4.25" x 4.25 split into 2 pcs for alternate cleaning Rio pump with good flow Chetto while it lasts. I have a very heavy growth of brown with green hair algae starting up on a 19 day old screen. Now I will try to photobucket pic of screen on a follow up post.