Quite a few plants that are sold for the aquarium are infact domestic housplants and will not survive for very long at all....and that includes the "spider plant" type plant you describe.
For general, all purpose plants that will put up with low light etc, try things like amazon swords, java fern, vallis and ludwigia.
Don't worry about pH or anything, most plants will survive in a variety of conditions.
There is a planted tank forum which is good. You can ask questions on there although it can get a bit "high tech" http://www.ukaps.org/forum/ Good luck and keep asking the questions.



