Your website states that poor cantaloupe melons may be due to water stress....
Your website states that poor cantaloupe melons may be due to water stress. We have an underground sprinkling system which waters our cantaloupe twice daily for an hour each time. The melons were doing fine, but now they are collapsing and becoming spongy on the top side of the cantaloupe. Is this too much water?
Maricopa County Arizona
Although I do not know how much water you are applying per irrigation, it does sounds like a lot of water. Over watering can cause fruit development problems. You may be aware of tomato fruit splitting when excess water is applied. In general reductions in water are good as fruit starts to develop. What is going on in the soil? Does the soil seem water logged? If so then back off on the watering.