need help with clones

i took cuttings monday and have been looking good untill today now the leaves are starting to curl down wards and the tips are turning light green i had them under a 250 MH 5 foot above them so im thinking that was the problem so i turned it off. im cloning in water with the water temps 67-70 F. ???

Your water is pretty cold. Clones take about 10-14 days to show roots and if you want to have any kind of high success rate, get a clone dome and a heated mat. I like rapid rooter plugs, clonex and the clone dome. I easily get a 90% success rate with these tools. You can find clone domes at your local garden store and they usually include the heated mat. If you can, get your water up in to the high 70's and hopefully your humidity is high too. Given the fact that you JUST took cuttings this week, I wouldn't be messing with them as you're probably doing more harm than good right now.

I would do like homebrewer said, but I would also clip off the burt leaf tips. It encourages rooting over growing. The bottom leaves turning brown and falling off is normal.