AeroFlo setup needs help for my ladies thrive PLEASE!!!

[NORCAL KILLS]

Here are some pics of the ladies after a cleaning of the reservoir added new water and nutes. I switched the lights from MH to HPS and now on a 12/12 cycle. Ladies are responding well but still some leaf curl remains. Any suggestions, ideas, thoughts?

 

[Biffdoggie]

Looks pretty good to me, the curl and/or burn/yellowing won't go away once it's happened to the leaf, watch the new growth for an indicator of current stuff.