When people tell you that you need to have this, to do this and you need to have that to do this and on an on and on. Im gonna tell you how to feed your grow for less than $50.00. Use the things you can find on the shelf of your local lawn and garden section. You have Miracle Grow, Peters, and so on. My personal preference is the Schultz brand fertilizers. The reason I chose Schultz is all you have to do is follow the directions. There is no guessing on starting low and working your way up like MG. Schultz says feed just like nature, every time you water. My particular choice off Schultz is Orchid food for the vegetive part of the process and Schultz Bloom Plus for that phase of the grow.
Link for Schultz to choose your concentration of NPP.
http://www.spectrumbrandshomeandgard...fertilizer.htm
Check out their soil and amendments.
http://www.schultz.com/SpectrumBrand...=NoModifyGuest
1) Schultz Orchid food $3.85 you use 1/4 tsp per gal.
2) Schultz Bloom Plus $19.95 for 5 lbs you can buy smaller for around $5
If you just used these two nutes you can get away for $10.00 - $15.00 for the whole grow.
3) Fulvic Acid $28.00/ltr on ebay. I will use one cup
4) Humic Acid $28.00/ltr on ebay. I will use one cup
5) Carb loader $26.00 I bought 3 kg of lab grade dextrose which I will add 1/4 tsp per gallon the whole grow increasing at flowering. Most everybody uses blackstrap molasses $5.00
6) Superthrive various sizes and pricing.
Although I have an abundance of stuff you only have to have the first two.