After your seedlings are planted in a hydroton basket (*1) (I recommend hydroton pebbles because they can be re-used many times, they are pH neutral, and releases no nutrients into the equation)
When water is ready and dechlorinated (http://our.windowfarms.org/2010/03/23/the-importance-of-water/) mix in the following Base Nutrients:

*) Maxsea 16-16-16 all in one powder
~A great product that is perfect for the new hobbyist due to its affordability and easy dosage is Maxsea (*2). It is a blend of quality North Atlantic seaweed, quick acting, liquid soluble nitrogen, potassium, phosphorus and other micro-nutrients.

For those willing to delve into their Windowfarm experiment further~

1) Aqua Flakes A & B by House and Garden
~The special composition of the nutrient solution leaves the water reservoir pure and keeps it fresh. At the same time it provides an excellent balanced nutrient, ensuring the optimal absorption at the root zone. Aqua Flakes base nutrient is composed of liquid nutrients and trace elements and contains no bulking agents (100% organic products bulk up and are too thick for airlifts) which make the transfer from the root zone to the plant easier.
~ Use from seedling to harvest (veg >flower)
~2ml/1 gallon of water * every week increase A & B by 1 ml
~NPK= 3.1 – 0 – 3.4 / 1.5 – 3.4 – 6.5 (N= nitrogen – P=phosphorus – K=potassium)
~ (*3)

2) Drip Clean by House and Garden
~Drip Clean forms an ionic bond with salts, making it impossible for them to build up in the hydroponic medium or root system.
~Use from seedling to harvest (veg >flower). This will reduce need to flush plants before harvest.
~All natural derived from phosphoric acid and potassium oxide
~ NPK= 0 -18.7 – 6.1
~(*3)

3) Seaweed Foliar Spray by Nitrozyme
~Packs it with maximum levels of amino acids, enzymes, micro nutrients, plant hormones (auxins, cytokins, gibberllins) and soil biology that encourages vigorous and healthy plant growth. Plants under stress are unable to produce sufficient cytokinins, the natural plant growth hormones which are necessary for plant growth, nutrient mobilization and distribution, germination, cell division, root development, flowering and seed formation. These naturally occurring hormones have a very pronounced effect on the growth of plant cells and regulate delicate physiological plant processes.
~ Spray on weekly during veg, (bi-monthly for Aquaponics) but iIf flowering is in progress more flowering will occur.
~ 7-10ml per 1 gallon (pour in a spray bottle)
~ (*4)

4) Great White Mycorrhizae by Plant Success
~This will enable your plants to break down and absorb nutrients efficiently and effectively. Also, it will increase water uptake and the overall absorption area of the root system, resulting in a healthier plant. Mycorrhizae is a combination of beneficial bacteria, and plant vitamins
~Use ONLY ONCE or TWICE per HARVEST
~ 1/2 scoop per 1 gallon
~ (*5)

Remember all of this is trial and error, and there are several similar products on the market, but this advice has been tested on my Windowfarm.
Cheers!

*Sites:
*1 = http://stores.northcoasthydroponics.com/-strse-22567/Hydroton-Clay-Pebbles-10/Detail.bok
*2 = http://www.highcountrygardens.com/catalog/product/H0042 <– cheapest price I’ve seen
*3= http://www.house-garden.us/
*4= http://www.agriorganics.com/soldagry.php
*5= http://www.humboldtwholesale.com/Plant_Success/Great_White

by: Holly Johnson

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