Newbie planning a horizontal scrubber for FW tanks

[markstrimaran]

Hi Paul. Nice mbuna aquarium. I like your rock work. Is the purple color from the rocks, or an algae growing on them?

[Paul Sabucchi]

Hi Mark, Happy Nee Year. The colour is algae growing, the rocks are a naturally a very pale sandy colour (some kind of very hard sandstone). They come from the paddock just outside the door (no shortage of supply, and I like a "heavy" scape to keep the fish amused). They are starting to grow also on the rocks in my more recent 2nd mbuna tank. I hope that even if the algae scrubbers take off there will still be algae cover on the rocks for the mbuna to do their thing.
I am looking at these lights
http://m.ebay.co.uk/itm/WYZM-6-Pack-...%257Ciid%253A1
Any thoughts?
Ciao

[markstrimaran]

Your going too need higher wattage led chips. It lacks the power to penatrate water.

[Paul Sabucchi]

Even just the 1/4" sheet of water, if that, that may be flowing over the plastic canvas? The strips woul be only about 1-1.5" from the surface of the water/plastic canvas. The tank lights are even crappier but no shortage of growth both on rocks and glass.