@Fun_Growin, Thanks for the pointers! I'll go check out @b4rns.
For what it's worth, the first pot for my seedling is a 0.8 gallon, but I wrote it as 3 litres... My brain runs metric by default, sadly. I do have a second DIY smart pot that is 5.5 gallons ready for use as my "final" container. I'm hoping that'll work out.
I'll do my best to practice some restraint here - It wouldn't be much of a stretch to say I tend to make things more complicated than they need to be in general. 😆
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