Yellow, Stunted, and Low Self Esteem Girls

Setup:
400 watt MH at 1.5 feet away
High Temps (I'm working on it) 85-90 with lights on 78-82 lights off
18/6 scedule
35-40% Humidity

They are 15 days old from sprout. Roots are touching the water now, 6 gallons in 10 gallon tote. Germed in system. PH 5.6-5.8, distilled water.

The three plants in the front are stunted, the three in the back have really picked up. My camera died so I was not able to get a full shot. One plant has very yellow tips (see photo) this is about the size of the three in the front. The other photo shows the growth difference with the three in the back but has yellow veins. I have fed them a small dose (less than 1/4) of AN micro grow bloom last week and a full dose of mighty crobes beneficial microbes


I am doing a res change tomorrow. I have superthrive as well and would like any suggestions.

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hey man 3 of my Hawaiian OG clones are growing superb however my dj shortberry OG is showing the same effects as your first picture it is nearly 2 weeks into veg one leaf has nearly yellow'd off completely and the top leaves are getting these little tiny yellow circles on them and drooping down I only have a couple more green leaves left on her and there very small can anyone help I am thinking of just tossing the clone and getting a new cutting right before I flower my other 3 Hawaiian's.