<from the forum> My 'test' light setup I'm playing around with is in a 30cmx20cm tank lined with mylar. I'm only using half of it - so estimate a 20cm x 15cm area that contains two small pots with drosera aliciae in them. Both were repotted from a crowded pot. Neither looks very well at the moment - probably because I keep experimenting on them ;-) both are about 10cm from the lights balanced on upturned plant pots.
The lights. Both on the same heatsink (20cm x 8cm) - I have 5 lots