A page to discuss and document any nutrient alternatives you have seen or hear about. Add you input!
Floramato can be used in the at 1 teaspoon per gallon of water. It contains the appropriate PH buffers and is designed to stay soluble in the water.  It is good for a wide variety of plants.  http://www.hydroponics.net/i/133541
Scroll down to pages 10 & 11 for the dosage and some more info about the products: http://www.generalhydroponics.com/genhydro_US/GH_catalog04.pdf
- "We bought some FloraNova the other day to use instead of the AG nutrients and it's fairly easy to use - It's just one part. It was fairly cheap at the local hydro store. 1 gallon US for $70 Canadian considering you only need 8ml it is quite the bargin - Our plants have perked right up."
- It is my experience with hydroponics that organic nutrients do not work well. I know that the stuff Aerogarden use they say is organic and it may be. But most Organic stuff has residue that will clog the pump." 
- "Miracle grow is not for hydroponics and won't work well. It is a soil supplement and doesnt make up for the nutrients in soil that hydroponics doesn't have."
- "Well you have to use a fairly Deluted ratio but I have seen it work with the Aerogarden. Conciderign you can buy the Masters Deluxe kit for 40 bucks (even cheaper on sale) and that has enough nutrients for a year , I am not sure there is a much cheaper way to buy nutrient's. http://www.discount-hydro.com/dept.php?navid=12 
Things to consider
"One thing special about the Aerogarden nutrient tabs is that they claim a patented buffer ingredient to allow you to use tap water in the garden. [...] the instructions I've seen for mixing hydroponic fertilizers included some variant on distilled water."