Ok, so here are all of the answers I have for you Hemp Goddess...The rest, i'm afraid, I don't know. I just bought a digital PH meter and testing the PH of just the water I use yields a result of around 7.5(apartment tap water) and once I added the nutes, the PH went down to about 5.7-5.8, it kept fluctuating between the two.
I will defer to your expertise regarding whether PureBlend Bloom is organic or not but it does say organic plant food on the label.
Yes, bag seed and I do hear you about each one behaving/growing differently.
Closet grow, about 24" deep, 68" long and 96" high. 250 watt HPS with a reflector. No exhaust system but fans to blow air around. Light on temp is around 74-76 and humidity is mid 30's.
I can't think of anything to tell you but if you have more questions, feel free to ask and i'll try my best to answer.
Cheers for the help
I know that you are not going to want to hear what I have to say, but if you want to end up with anything at the end of flowering, you are going to have to make some big changes. This growing cannabis can be quite an exacting thing and it has very specific wants and needs. I usually try and make newer growers see why it is expensive to buy...it is expensive to grow and hard work to grow.
First I want to say that there is not such things as "standard" potting soil. Some of it is good, some of it is bad. I stay away from all Miracle Grow products, although I hear that the seed starter mix is okay. You do not ever want to use soil that says is has moisture crystals in it or that already has nutrients added.
That is a huge amount for the pH to do down just adding nutes. Are you sure that you meter is adjusted correctly? If it is, your pH is way too low for soil and you are blocking out a lot of nutrients at those pH levels. With soil you want to keep your pH between about 6.3 and 6.8. Here is a link to a chart that shows nutrient uptake at different pH levels.
http://www.marijuanapassion.com/forum/showthread.php?t=1908
Second, a continual supply of fresh air is critical for proper photosynthesis. In other words you need some kind of exhaust system to exhaust hot CO2 depleted air and bring in fresh air. You cannot just keep circulating the same old air. I fan like you have is also needed, but a good exhaust system is important to a good grow.
Next, your light is not nearly enough for the space you are in. If you do not get your space to the proper size, I can pretty much guarantee light airy bud and not much of it. Your light is good for a space about 2 x 2.5. I would recommend making some kind of reflective removable panel that you can put in there to reflect the light back to the plants. Also, in flowering you have to make sure that your flowering space is 100% dark during the lights out time. Few if any closets provide this. I had to do a lot of work to my closet to get it so light did not leak around the door. Light leaks are bad in a number of ways and will retard or halt flowering or cause hermies. And this dark cannot be interrupted at all, even for a few seconds.
I have never been a big fan of Botanicare either, but nutes are kind of an individual thing. The first things you need to do is get your pH in line and get your space smaller.
Have you sexed the plants yet? How long did they veg?