OVERWATERING
If you’re drenching your spider plant more than once a week, you’re overwatering it. You’re also overwatering it if you’re drenching the soil even when it is moist.
SOLUTION
Water it less often!
UNDERWATERING
If you’ve been leaving your spider plant without water for weeks, then that’s a pretty good guess that it’s the cause of the brown tips. Another sign: the leaves are starting to fade in color.
SOLUTION
Immediately water your spider plant thoroughly. Allow the excess water to drain through the pot’s hole, then water it again.
using tap water
Tap water should not be used in watering plants. It contains chemicals that can damage your spider plant.
SOLUTION
Leave your watering can full of water out overnight. This will help neutralize the chemicals.