The two White Tahoe Cookies seedlings are developing steadily. I removed the cover from the tray because it seemed to be getting too humid and I wanted there to be some air circulation around the seedlings as they were starting to fall over under their own weight. I added another half an inch or so of coco to the solo cups to reinforce the stems.
The true leafs are showing just a bit of yellowing, which I'm interpreting as a sign they are ready for nutrients. I mixed up just 2 litres of nutrient solution using House & Garden's Cocos A & B as well as Roots Excelurator. Hopefully this small amount of nutrient solution will be all it needs until I can transplant them from the solo cups into proper 1 g fabric pots and start doing automatic fertigations.
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On Monday I transplanted them into the fabric pots with 100% coco coir. They were originally rooted in a mix of coco peat and chips, but I’ve switched to a much higher quality coco peat only.