Fish:
A great location for ordering live tilapia: http://tilapiasource.com/zc/index.php?main_page=contact_us
Worms can be raised and fed to your fish: http://www.unclejimswormfarm.com/
Plants:
Plumbing:
These timers are cheap, easy, and adjustable to the minute: http://www.jascoproducts.com/products/pc/GE-7-Day-Digital-Timer-White-87p919.htm
Nutrients:
This test kit provides complete testing for both nitrogen and pH levels: http://www.petco.com/product/103685/API-Freshwater-Master-Test-Kit.aspx
Greenhouse:
Solar-powered vents require no electricity and prevent overheating: http://www.growerssupply.com/farm/supplies/prod1;gs1_greenhouse_accessories-gs1_vent_openers_1;pg104037.html