I'm stuck now, because
Is that tank with the new LEDs or the aquabars?
1 bar is plenty for medium to low tech. I have 2 on my 60cm and yeah it can be dim.
This is the dimmer for a good price at £3.19 you cant go wrong lol http://www.ebay.co.uk/itm/121122503636?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
last few weeks i change to a bright 72w led. Lots of light 😉
Is that tank with the new LEDs or the aquabars?