This morning I started the process of making some new ollas - the next batch of grow bags are here. In a few of them I used a 1 cent piece to cover the hole at the pot base - a little silicone around the base inside then flex seal on the outside.
After making up the bases a thought hit me - could the copper cause toxicity? Looked it up and it is a thing, so I will also now cover the coins on the inside with some flex seal.
Came up with a different method that does not require fixing anything on the inside when blocking the hole - I just used some electrical tape then applied the flex seal on the outside. May then also remove the tape and apply another layer on the inside. Hope it will have the mechanical strength.
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