as Zandor used to say, go cheap, grow cheap.
If you want to get into organics, be prepared to do a lot of reading.
Don't use shit on your plants of any sort. It MUST be composted first. For an indoor grow, unless you know how to 'clean' compost of pests, just buy compost. Ammonia in more than very very small amounts is too 'hot' for your plants. Epsom salts are for fixing deficiencies. You want to reinvent the wheel go right ahead but for most people, purchased ferts are the way to go.
Basically, if you can't afford fertilizer, how can you afford to pay your electric bill? or do your parents pay it?

oh... rabbit shit... it comes from a rabbit's ass. you didn't know that?
stinkyattic Reviewed by stinkyattic on . any good household fertilizers yes, i know im cheap. but is there anything like fruits and shit that i can add a bit of juice from into my soil to make my plants grow nice and sturdy? Rating: 5