Hey riki, the new leaves don't look too bad & it seems to be growing so nothing major to worry about. Not sure what the problem is or was but I suspect the pH...keep adjusting it if need be & make sure the medium is always moist. The fan will also be a big help. Also make sure they're getting as much light as possible so keep em really close to the CFLs...the problem with these lights is that their effectiveness drastically deteriorates further away i.e. even 5cm makes a big difference, if you had a light meter you would see what I mean. Actually could this lack of light have been the problem all along?