Pic's are always helpful...The first thing i notice tho,is that you water ALOT.I have a flood/drain system and also a drip system using hydroton,I water once a day for 15 minutes.When the plant's are bigger I may water twice a day for 15 minute's,but no more than that.My first hydro attempt I was watering every couple hour's,The plant's ended up with weak root's/root rot.Hydroton hold's water way better than I thought it would,A good way to see how often to water is...water at light's on..then watch to see how long it takes them to start drooping,If they dont droop within the 12 hour light cycle then once a day is enough..If they droop then water once at light's on..and again 6 hour's later.OH Yea and your PH is correct,I let mine flex between 5.6-6.0.

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