here is pics of the tent/area around it. let me know what your advice is/comments!
main vent on the back/bottom is open, has a screen underneath that I have open to help with ventilation as well.
Is that your inline fan I see on top of the tent? That won't work, I know those fans they are quite weak. I use those cheap guys to push air in, not out. What you honestly need is this here
http://www.progressive-growth.com/proddetail.php?prod=15040 or the 4 inch of this model at 170 something cfm should still work, these fans are realllly good and strong, all I use for exhausting. Okay for feeding... first you need to get a Rubbermaid tote, medium size or whatever you think will be ok. You need to go out and purchase this along with a small air pump, line(s) and airstone(s) I used 2 lines off of one pump with 2 x 6 inch stones for a large Rubbermaid bin, you should be fine with 1 line and a 6 inch. What this does is very important, it aerates your solution providing a lot of DO (dissolved oxygen) to your plants roots when you water. DO is a key component for growing in any medium. Oxygen content in your nutrient solution is often neglected. Plant roots absorb O2 and need it for various purposes, but the primary reason for keeping an oxygenated solution is to fend off anaerobic bacteria such as root rot (blight) and fungus. Air stones do the trick. Keep your water agitated for at least 24 hours before adding nutes and feeding. 20 degrees is the perfect temp for your solution at feeding, it allows the best uptake. Plant foods have 3 main ingredients that will be the mainstay of the garden, Nitrogen, Phosphorus, and Potassium. These 3 ingredients are usually listed as N-P-K. A 20-20-20 plant food has a Nitrogen level of 20% P=20% K=20%
Secondary nutrients are Calcium, Sulphur and Magnesium. In trace quantities, boron, copper, molybenum, zink, iron, and manganese. The key to feeding is to only give the plants what they need, no more, no less. If I was you I would watch for any signs of overfeeding and decrease to a safe level. Stick with one two strains at the most so that you can dial in their specific needs. Every strain is different and trying to feed/maintain 6 diff strains is not logical, it's too hard IMO. Molasses is best used between week 4 of flowering until the end. It feeds the good bacteria in your medium and creates a larger uptake of nutrients near the end of the cycle, it's a bacteria inducer. I use 100% sugarcane at 1 tbsp. per gallon dissolved in boiling water than cooled. I wouldn't use it in veg myself and Id wait until the last month to use as it will cause serious buildup in your medium. Do you know about flushing?
Before I type a whole bunch more please tell me what you already know about training, pruning techniques as this will be important in some cases to create the biggest yield. A big fundamental is cleanliness. You will avoid so many issues if your sterile in everything you use. Another reason why I want you to use an outside source is that you SEAL your tent and do not use household air, only outdoor air filtered through cheesecloth that is secured on the end of your ducting. You want to control everything in your space with a scientific mind. But hey man, I get it, your renting and your not really able to vent in good air, too bad though. I rented too but I always fixed any damage I did before leaving the home. Like I said everything I tell you is me being kind and trying to give you the best advice to produce large, potent yields with little to no problems. What you do with this advice is your own business. What do I care how much you get and how good your weed is lol. I just love educating newer growers, plain and simple. Is this really your first time growing as you stated in your first post? How much do you know already? Is my info helpful or do you know most of this stuff already. There is so many more little things I haven't mentioned, simple once learned, that can optimize your mini ecosystem you've created. I believe in simple growing yet it may seem complicated to a neophyte, all your doing is best creating optimal environment for thriving in each and every aspect. So many guys overcomplicate growing, NO NEED, it's pretty basic once you understand everything that a plant needs. ~ BCbuddy420
Good job.