I'm wondering if anyone knows the best way to mend this pot? It's been in the garden and a crack was visible but had not broken apart (until my husband decided to move it). One seller on ebay, ages ago, mentioned swimming pool glue that would be waterproof. I never followed it up but can do. Has anyone tried that or can recommend something that they have used successfully? The pot is about 22 cm tall and about 34 cm wide. thanks!