Welcome to ATP Brook!
Hmm, not many roots a week ago? That seems like an important symptom. i hope fertilizer helps! Just go easy with it. It is always safer to under-fertilize. You proved that if it has had no fertilizer for two whole years! Over-fertilizing can kill almost overnight. Just follow the directions for house plants.
Only watering it once a month doesn't SOUND like it should be waterlogged soil, unless the pot sits in a puddle of water and suck it up as the month goes by.
And the potting mix LOOKS pretty coarse, which should drain well and let air in.
I asked in the Houseplant forum to show this to some more experienced people.
The thread "Help on my SPIDER PLANT" in
Houseplants forum
The thread "Spider plants are the best!" in
Houseplants forum
