When start feeding seedlings

The medium is pH-adjusted for long-term control with a lime charge large enough to last an entire cycle. It has a mineral-nutrient starter charge that adjusts the initial level of nutrients up to a good beginning charge, correcting the ratios to work perfectly with CANNA TERRA nutrients. I haven't used that product, but with all preliaded mixes from other brands , you dont need to feed for first 3-4 weeks.

Hey growmie if they are 2 weeks since hitting soil but still look like that, I wouldn’t feed yet, they’re still working on getting their roots going. There’s already some light nutrition in Terra Seed Mix so no rush. Wait until they’ve got a proper set of true leaves and look like they’re actually starting to grow, then maybe start with a ¼ strength dose if needed. But if you transplant into the full Terra Professional Plus zone soon, that’ll feed them for a bit anyway. 100 PPFD is perfect for now. Once they start growing properly, you can push it toward 200–300 PPFD slowly. Don’t force it — they’ll tell you when they’re hungry and ready to stretch. You're fine, just give 'em time 🌱✌️