Lights are about 2 foot away, never changed the water yet eitherhow close are your cfls?
within 12" is a big NO-NO..
other than that just refresh water at the same temperature constantly at least 1x a day and you'll have roots or root bumps in 2-3 weeks.
with an oxygenated system you can get clones in as little as 5-8 days with no hormones just clean water.
too much light wont allow the plants to develop root growth when you are cloning
want to make sure u aren't overlooking something simple.