If the soil isn't made up of rocks and other large ingrediants then I would say the soil isn't very good then. If it looks like regular potting soil and the water runs out just as fast as you apply it, I would repot the plant. If water runs out the bottom very fast, and you have only been watering them once a week, then it is probably too dry. I water almost all my cycads with .5 to .75 inches of water, every other day in the nursery. You really don't want to keep cycads dry, you just don't want them to stay too wet with a soil that holds too much moisture.
Sagos are more tolerant of watering conditions than many of the rare cycads.
There should be no problem with potting the plant into some good soil and watering twice a week as long as your temperatures are high enough where ever you are. There are no responses to this message.