I did not know either before Pamela, I noticed it before on my other two old ones, big mistake for me that yellowing quickly followed after fertilizer was applied killing the plant oh well..learned my lesson there. Too bad those two old ones were about 7 years old in that soil less set-up. Maybe if grown in soil it will appreciate it more with fertilizer, but I was growing it soil-less then. So this one I have now no fertilizer just keeping it moist with the gel beads.
It is different growing in soil, where we can easily flush out the excess salts later with proper drainage. My gel beads shrink in size and I just replenish with water again to make them plump and moist once more.
Also if the plant is already struggling, applying any fertilizer will not help, it has to recover first, grow new leaves and roots. The seasons are changing too, so the indoor plants are likewise adjusting.
