Your plants are looking quite healthy — nice even green color, good leaf posture, and plenty of new growth tips. Here’s a breakdown of where you’re at and whether you should start feeding nutrients now:
🌱 Soil & Feeding Context
-FoxFarm Ocean Forest is “hot” — it’s nutrient-rich and can feed plants for 4–6 weeks on its own.
-Happy Frog is milder but still fortified, usually lasting 2–3 weeks.
-Since you’ve layered Happy Frog on top and Ocean Forest on bottom, your roots are likely just now reaching into the richer Ocean Forest layer.
4.5 Weeks In — Likely Transition Period
At around 4½ weeks, the nutrients in Happy Frog are mostly depleted, and the plant is beginning to rely more on what’s deeper in the pot. If you’re starting to see lighter green new growth or slower growth rate, it’s a good sign the top layer’s nutrients are running low.
However, from your pictures, I see:
-Consistent, medium-dark green across most leaves (not pale).
-No visible deficiencies (no yellowing, purpling, or burned tips).
-Strong new growth sites, good turgor pressure.
That means you’re right on the edge — not deficient yet, but close to the time for supplemental feeding.
Since you’re using General Hydroponics synthetics, you can start light feeding soon, but not at full strength yet.
Next watering:
-Mix ¼ to ⅓ strength of the GH trio (FloraMicro, FloraGro, FloraBloom) according to the veg stage ratios.
-pH your water to around 6.3–6.5.
-Observe how they respond over the next 5–7 days.
If growth accelerates and color stays healthy, gradually increase to ½ strength next feeding.
⚠️ Watch For
Leaf tip burn: means you’ve started too strong. Back off slightly.
Pale new growth or slowed growth: means they’re hungry — increase nutrient dose next watering.
So, short answer:
👉 You can start light feedings now, but don’t go heavy yet — your plants look just on the cusp of needing it. Hope that helped. 😘