We use a huge ceramic bowl as a water feature. Because of an early frost, protecting the bowl didn't happen, and it's developed a leak in two places. We repaired it, but it turns out, almost two months later, the epoxy we used is now lifting off, and the bowl is leaking again. We cannot repair it from the outside, as it is buried. However, it can be repaired inside, and down to where the bowl meets the ground. Do you have any suggestions?
You can try brushing melted wax on the interior and letting it dry. You could also try a different kind of resin (the food-grade kind used for repairing leaks in glasses). However, if you're using it as a water feature outside, and it's not leaking too badly, consider that you might just be watering the soil around it and leave it be. If it remains filled fairly well, then leave it alone.
Updated on August 5, 2018