Thanks Catbuds, they are 4 weeks and 2 days into 12/12 so I have time yet. They first plants did the same thing so I wasn't too worried about it. I left the fans alone this time though. I was cutting them off the first time around...
I have given them Canna Flora 2-2-4 with molasses mixed in. The Canna since they went to flower and the molasses started about a week ago.
Just odd how it's only the 2 plants under the T5's, not the two under the HPS...Spectrum? Heat? The 4 foot 6 bulb has 2, 6500k and 4, 2700k bulbs with 24' 6500k sidelight.
150 Watt HPS with a couple 26W? CFL's....No Clorosis.