You're on your own with the soil ones.....the hydros.....shit I'm on a temporary computer here and can't upload and download certain stuff....there's a hidden pop up blocker somewhere that I can't find and disable. How are the hydros growing? I can see the clone pretty well but not the seedling really. I think your ph issues are both hydroton and lack of buffer related.

If they are growing well you should go to 24 hour watering and see how they do. It certainly wouldn't hurt to change them out to some fresh water and a drop of ST....they like additions and fresh things. I would like to see you have them on 24 hour watering before upping nutes so I would use this time you have on the weekend to troubleshoot your 24 hour drip. (Pssss....you can go to 2 drops/gal ST and still be ok I think.)