Whats wrong here? Dutch master *video*

[video]http://www.veoh.com/browse/videos/category/drama/watch/v205590088hczq5wq[/video]

ph- 5.5-5.7
temp- 72 water 78 air
DWC bubble buckets
dutch master- gold a/b add.27 silica zone
advanced- sensi cal

Water starts at 20ppm, I add seni cal until 150ppm. Then I add the dutch master additives next as dm says but I cut down on .27 to like 1/2 strength because it would make my ppm go up too much and I wouldn't have ppm room for a/b . My best set (rear row middle) are at 1150ppm. The buckets in the rear row to the left and right are at 1050 ppm. The smaller guys are at 200-400ppm. All ph readings done with a freshly calibrated blue labs combo meter and truncheon. DM calls for 500 750 1000 1250 weeks 1-4 veg. The sick plants dont have the same deep green of the healthy ones so that would be nitrogen? I really dont think it's nute burn but on the other hand why are they eating at themselves to stay alive and growing so slow. I have 3 choices add more water, add more cal mag or add more a/b.

are you using RO water or tap. i have tapwater i use a/b .27, silica, and zone (the full gold line)
never needed any other additives, my tap water is about 250ppm. I get amazing results but i use rockwool flood and drain. Also when im done mixing my water is at like 1700ppm. It seems high but ive never had ANY nute burn. Just follow the chart on there website.

It looks like you've got a broad-spectrum problem like over/under watering or Ph. It's not my area so you should ask in the hydro section about watering frequency and Ph.

my water out of the tap is 20ppm it has pretty much nothing in it. It's hard to follow the chart because my ppm would be crazy high if i followed the ml they list on the site so i was trying to stay in line with the ppm listed, guess I will try it your way.

After watching it another time, I'll guess underwatering or Ph since the worst plant is the one with the fan blowing on it. If it were overwatering, the plant with the fan under it would be the best.