S/H Troughs

[Ray]

I suggest against doing that for two reasons:

1) Sharing a reservoir of liquid is the ideal way to share plant pathogens.

2) By watering from the bottom, rather than flushing thoroughly by heavy watering from the top of the pot, you will be concentrating the nutrient minerals and plant waste products in the medium as the water evaporates from the top, ultimately poisoning the plants.