Ok I am going to say your over/underwatering your plant badly and this is how you can fix it.
Your soil is a soilless medium, Right? Promix.
1) If so You need to Flush, give them PH'ed water till it runs out the bottom! Check the PH of that runoff, if it's not between 5.5 and 6.5ph you need to increase or decrease the ph of the water you give it and get it back withing range.
2) you need to let the pot dry out completely! Could take days. Your pot should be lite when lifted, dry to the first and or second knuckle when poking your finger in the soil.
3) you should do this and stay on this watering pattern, don't set a schedule only water when the plant needs it and water it completely. You should have 10% runoff. No more "little bits" unless it's a seedling
4) water once with ph'ed water and the next time give water, nutrients ph'ed. And repeat over and over.
5) it is most likely your having root and nutrients problems too, but first thing asap get your plant on the right watering schedule.
How many plants are like this?
Hope this helps
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