Spider Plant (Chlorophytum Comosum) Disease

Question

The leaves of my spider plant are turning a solid light, sweet corn yellow. In some cases, the tips and base of the leaves are green, but the remainder in between the base and the tip are solid yellow. It also has some dry, brown tips.

Only the six spider plants in the living room and dining room have the issue. Three other plants in separate bedrooms have no solid yellow leaves.

Note: I was away for two months in which the house temperature was a constant 60-65 degrees F. Normally, when home my house has a high of 60-65 days and 50 degree nights. During my time away, the neighbor watered each plant every 10-14 days. Some of these plants are 12-15 years old and have never had these issues before.

Answer 1

Your neighbor may have overwatered while you were away and the plants may have root rot. Check for that and this article will help:
https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm

They may also be suffering from a cold draft. Is it possible that a window was improperly closed and is creating a small draft?

It could also be a lack of nutrients, though this is not common with spider plants.