Flying Dutchman Thai-Tanic

So this is my first grow, and I'm not really doing a grow log just looking for a couple comments. I've got 5 females at 28 days 12/12. Using Botanicare Pure Blend, Liquid Karma and Sweet and have them in Fox Farms Ocean Forest, 1.5-2 gallon containers for two, and half gallon containers for the other 3. Using 400w HPS.

Two plants i stunted early on in veg due to some pH problems, but I got all that squared away a long while back. One plant I started much later and cant really be seen in the pics. Tallest plant is probably right at 4 ft. So really I'm asking do these look about on par for 4 weeks flowering (i'm expecting it to take 70-80 days total). Does anyone have experience with this strain? Unfortunately I don't yet have a good pic of the main cola of the plant in the back. I'll probably post more pics in a week.

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