Thank you, Kleeem! Giving the ratio really helps. I will get the hydroponic nutrient ASAP. I feel sort of bad that I have deprived my little guys for a few weeks now.

jentsu926,

Just to give you a heads up. When you go to the Hydro store
they typically will have a lot of options. I normally recommend going with
three blend solution (N-P-K) and mixing it according to the directions.

Now since you are growing Ivy you will be going through a
lot of your N mixture, just as an fyi.

Normally a large bottle runs around 15 dollars each and they
have some smaller bottles you can buy. I would recommend buy the synthetic fertilizers
over the organics just because you won’t be eating the ivy and they tend to be
more bang for the buck.

There are organic fertilizers that you can buy if you choose
and the person at the hydro shop can normally point you in the right direction.

I will also mention that they do sell one part solution you
can buy. This might work well since you know what solution you want (High N)
and it will not be changing to fruit or flower. They should be able to advise
you at the store on what they have and price.

Just to give you a heads up on the container, once you add
nutrients into the water algae will normally shortly follow. You ca do two
things:

1. Add hydrogen peroxide (H2O2) in little bits,
   this is a little controversial but typically accepted in the hydro community.
2. Get a less clear container. This will inhibit
   the light, help the roots out, and still look cool if it is green or something.

Jeremiah, thanks so much for the detailed response! I ordered some General Hydroponics Floragro just before I read your response--I hope this will be ok. I will check the label before I open it and if it seems too low in N, I may send it back. The reviewers seemed to like it for a variety of different plants and vegetables. Oh, and you are right about the peroxide trick. This week I didn't add it in to the water, and I noticed a small bit of algae. Nothing has changed in the way of light source/container, so it must have been the peroxide keeping things under control.

you`ll need at least the flora bloom and flora micro for a balanced nutrient. A typical jar doesnt have a lot of volume so you`ll likely struggle to keep the ph stable and in range. Best idea is to use a larger tub and then you can put a few more plants in too. An airstone powered by an aquarium airpump would be a good idea, plant roots need a constant supply of oxygen and lots of it. The H2O2 wont provide nearly enough.

Thanks, Hex. I had not considered the ph. The pothos is in a very large fishbowl type container, and seems to be doing well--probably explains a lot. The ivy is still really tiny (I bought the plants about the size of my thumb), so I think I will split them up into two different containers until I can find them something larger. I wish they had more decorative large hydro kits out there with the air stones that you mention; the ones I have seen are these contraptions not really suited for my living room, ya know? One inventor had come up with one, but no discreet air stone or any of the doodads that give better yields.

Try
Googling window hydroponics and jumping to images. There are some pretty good
setups that might not require you to go big, just creative.

https://www.google.com/search?q=windows+hydroponics&rls=com.microsoft:en-US:IE-Address&source=lnms&tbm=isch&sa=X&ei=VvceVdWxFdDioATaroG4Dw&ved=0CAoQ_AUoBA&biw=1366&bih=673