Pachira leaves browning at the tips
I have a pachira that I got mid-march, and it's been growing well (after a bout before I began to fertilize, where the plant dropped nearly all of its leaves and looked close to death (it's healthy and green again)), but today I noticed that the tips of the leaves are browning a little bit?
I have a theory about this, but I would like if someone could possibly verify or disprove? I think that I'm watering it too much, which makes sense because I water it once a week. Technically, this is indirect watering, because it shares a tray with my syngonium plants, all of which get a bit wilty if I don't water once a week, but the water creeps over to the pachira. I use 1/4th strength fertilizer, which is what it gets watered with.
I plan to move the pachira onto its own tray and not water it for a few weeks, but do you think I'm right about this?