Hey there man, MatanuskaValley referred me to this thread and I like what you're doing but I'm gonna try to help you for most yield for fewest dollars w/in your budget. Take or leave my advice but I think I can help you out! Get ready for a long post w/ a lot of quotes. Here we go.
Buy bulbs from
http://www.1000bulbs.com/ They generally have the best prices. Buy only <=2700k or >=6500k COLOR TEMPERATURE CFLs for simplicity's sake and for best yields. You don't want anything in between because these spectrums are closer to the green spectrum which the plant cannot use (as evidenced by the reflected green light as seen by human eyes)
You said you got roughly $50 at this point to invest. Let's make the best of it. Humidity is generally a minor issue/upgrade topic. There's tons of things of higher importance before worrying about humidity unless you're at the extremes which causes risks of mold, disease, dead plants, etc. Humidifiers and Dehumidifiers would put a big stress on your budget and you shouldn't worry about that until you've perfected most other things: like you're using H.I.D.s
Now, you can get an analog Springfield brand thermometer for
$1 at Walmart. I like analog; they're accurate and cheap. And the one there is a nice size. Perfect. It's nice to know your temp--that's a semi-major issue--not as major as light cycle or anything but pretty major. 70F-80F for soil w/out CO2 supplementation and 80F-90F with CO2 supplementation. You'll see all sorts of ranges from different sites and threads but this is a pretty general idea and a decent one to follow. If you're 84F w/out CO2--for this grow--don't freak out. If you got room for higher temps: off to Walmart or 1000bulbs for more lights.
Now, timers. I hope you're using one. Human error happens and you don't want hermies (which equal shitty or no weed). Shop around. Prolly find one for under $10 at Walmart.
Next, nutes. You've got Miracle Gro soil. You don't need any unless you flush it like crazy and wanna start over w/ advanced nutes. You're gonna wanna flush in a few weeks anyway (water with pure water--using double the amount of the size of your pots--and allow drainage to run off and don't reuse it). This washes out toxic salt buildup that results from the roots using nutes--especially chemical nutes--like Miracle Gro. You could kill your plants if you get too much salt buildup. Seriously. BUT IF MIRACLE GRO WORKS FOR YOU, USE IT!!! Everybody's situation is wildly different and I don't wanna knock another fellow grower (hey, we're all friends!) unless I know he's gonna really gonna hurt himself.
So, lets say you're 5th cousin dies and leaves you a few bones in his will. You can buy nice nutes now! I like organic, some don't. For chemical a lot of people swear by Advanced Nutrients and they seem to have the dankest R & D department. Expensive but killer. For organic, I like Fox Farms liquid nutes: Grow Big for vegging and Big Bloom and Tiger Bloom for blooming. Buy Tiger Bloom first because Big Bloom is just a bloom
supplement while Tiger Bloom is a
primary bloom nutrient. Got it. Good. Do research if you wanna know more. (I'm not trying to sound terse or cocky or know-it-all-ish or like an asshole--I'm using short sentences to cover a lot of ground!)
Next, more on nutes. If I recall, Miracle Gro provides nutes for around 2 months? Don't hold me to that. But, anyway, most people veg for around that long. Some don't veg at all and start flowering right away. Some veg for months and months (i.e. mother plants). Anyway, after some 2 months you're gonna want to start to add nutes again. You don't need to buy expensive nutes if you cannot afford them. (I'm not gonna be snobby--I've been tight on cash!). So, you've got options. A general nute is going to give you too much nitrogen and you don't want too much nitrogen for blooming for a couple of reasons: 1. Nitrogen lowers the bioavailability (a plant can only consume so much mass in one day--so you want it to consume the right things and not everything!) of Phosphorus and Potassium--which are the
most essential macro nutrients for blooming--makes the difference between nice yields and disappointing yields--seriously 2. Nitrogen should be used up for the most part in floweing to avoid bad taste--and you're homegrowing--hooray for good taste! So, you've got options. You want a lil' nitrogen during flowering, a lot of phosphorus, and a medium-high level of potssium (Tiger Bloom is 2-8-4). So, again, you've got options. Regular supermarket molasses (<$3 for a bottle) is 1-0-5 (for unsulphured which is most common). Use anywhere from a fraction of a tsp. to multiple Tbs. per gallon as a supplement to other nutes. This also is a carbohydrate which is great for the "micro herd" of microorganisms in your soil. You've got guano and castings, if i recall, which I believe have those microorganisms in them. Plus, carbohydrates are sugars which = sweeter-tasting weed. Sweet! Organic Miracle Gro Blood Meal is (6-9-0 which is good for blooming) and <=$7 per bag at Walmart. It's slow release so up to a few tablespoons per gallon of soil (mixed throughout or on top of the soil) is perfectly acceptable w/out much/any burn. There's ton of cheap nutes out there online and at garden stores, tractor supplies, and Walmart so learn about micronutrients and macronutrients so that you can read those labels so have fun experimenting! What does this mean? You can mix bone meal and molasses to get an acceptable level of bloom nutes (w/ a little bit extra N--but not the end of the world--I know I said differently earlier--but, hey, we're going cheap!) Look for more nutes at Walmart--read up on threads and read the label and use your noggin. It can be done. I have faith in inventive home growers. One more thing on nutes. You added that eggshell which has calcium which is an important (immobile?) nutrient. Good job. Just don't add any more because you don't wanna lockout P and K. Great!
You got mylar. Best choice. It has the highest reflectivity per dollar. Pros use that stuff. Done.
For future grows: (I'm skipping around now). SpeedySeedz is good but I'm not sure if they deliver to the U.S. Don't hold me to that though. Not sure where MatanuskaValley lives. I trust him more than most anybody on this site so I thoroughly trust his judgement and I bet SpeedySeedz is excellent. I just haven't used them. I love Attitude Seedbank: some of the lowest prices (when they have special deals going they are hands down the cheapest--$15 for 5-packs of award-winning strains and breeders), HUGE selection, AWESOME stealth shipping options, you always get free seeds on top of your order (ususally feminized!) from renowned breeders, decent shipping prices, pretty quick shipping, and I've always had great customer service and I've always gotten my seeds! Lots of excellent seed banks/shops though so do what's best for you!!! Always do what's best for you.
Next up, soil amendments. I'd add up to 50% pearlite (only a few bucks a bag at Walmart) for drainage and air to roots which is VERY important. Vermiculite does similar things but I haven't used it so I won't speak to it.
Watering. Water when the top few inches of the soil becomes dry. You don't want the soil always wet, nor always dry. Roots need both water and oxygen--so in soil you alternate having periods of having one or the other being the prominent compound being delivered to the roots--that's how soil works. Make sure you have drainage!!!! I cannot stress this enough as especially w/ cheap chem nutes, salt buildup is a dangerous issue.
Oh man, I've typed a lot. I'll work on wrapping this up. Hopefully I didn't talk about things you already know about. You seem like a smart dude.
If you have additional basic questions, post them here. Wanna go advanced?: lights?, LED?, HPS?, MH?, SCROG?, SOG?, grow boxes?, stealth?, filters? ona block? (use it!!), wiring/electrical questions?, nutes?, equations?, soil?, hydro? (I cannot answer those), temps?, humidity?, UVB?, airflow?, stealth cooling? (I know that shit well), seeds?, feminized?, hermies?, males?, LST?, light physics?, lumens?, coverage?, side lighting?, movers?, ballasts?, advanced spectrum theory?, plant problems?, pests?, etc.--------post them here!
I am sorry about the poor grammar and spelling. I know this forum can be colloquial but I usually try to stick to the King's English for clarity, readability, and precision (hey, there's a lot of science in this hobby!) but I just went flying on my keyboard for this post.
Alrighty! I am closing this out and
I hope you didn't think I hijacked your thread and I don't wanna sound belittling!!!
Happy growing and happy to answer questions,
secretforestgarden