Sweet Tooth - From Seed

In week 3 I had to monitor the amount of water I gave the plants as they were growing. By then end of the week the plants were absorbing a good amount of the watering over a 24 hour period. Next week I will have to up the amount of water by double to keep up with the growth displayed by the plants this week. They doubled in size week over week, and quadrupled in size over a fortnight. I was able to use a magnifying lens and a delicate touch to determine that both of these plants are indeed female, however after closer inspection I discovered that the plants are displaying differing traits. For instance one plants displays a purple colour to it petiole and throughout the vascular pathways of the leaf, while the other plant displays a more defined white colour with a dark strip in the center. It seems clear that these seeds though gathered from the same product are not in fact the same. I assume this is due to the fact that each seed is capable of producing a unique plant, or that these are likely seeds of the parent species of this cultivar but I will have to research further to be sure. At any rate the only other defining characteristic between the plants is height, the white veined plant has consistently been roughly an inch of growth behind the purple veined variety. Perhaps next weekend I will top the plants, it will depend on the growth I see this week, I may do it sooner. No change in fertilizer concentration, no change in amount of light, or humidity, however I have noticed that the tent has risen in temperature on average by 1.5 degrees F, I have been attributing this to the fact that more green material means more gas exchange, means more green house conditions, and as a result I have increased exhaust rate slightly. (It was partially blocked to help maintain temperature in the tent while the plants were younger.) So far I am quite happy with the progress I am seeing.