GoAuto6
Galactic Travler
one other thing there pricey but, the control wizard ph meter is a probe and it's a great product big help in the garden, you'll know what your soil ph is exactly. could be a lock out not a deficiency......has vertical growth stopped I ask because your still feeding grow nutrients and it looks like your in full flower?
http://www.ebay.com/itm/Control-Wiz...ture-Meter-12-Probe-Lawn-Garden-/350496330652
http://www.ebay.com/itm/Control-Wiz...ture-Meter-12-Probe-Lawn-Garden-/350496330652