The "Water-Only" Living Soil Recipe (Best for AutoPots)
This mix allows you to put plain water in your reservoir and let the soil do the feeding. You will only need to top-dress dry nutrients every 3-4 weeks.
Ingredients to add to 1 Bag of Tupur:
• Worm Castings: 10 Liters (approx. 2.5 gallons).
• Why: Tupur is sterile. Castings add the biology needed to break down organic nutrients.
• Aeration: 5-10 Liters of Pumice or Coarse Perlite.
Why: Tupur is already porous, but for a wicking bed, you want extra safety against root rot.
• Dry Fertilizer (Choose One Brand):
• Gaia Green: 1 cup of 4-4-4 All Purpose + 1 cup of 2-8-4 Power Bloom.
• Down To Earth: 2 cups of Bio-Live (5-4-2).
• BuildASoil: 2 cups of Craft Blend
(probably substitute with a cup of KIS Nutrient Mix)
• Calcium Buffer (Critical): 1 cup of Gypsum.
Why: Coco coir naturally steals calcium from your plants. Gypsum provides calcium and sulfur without altering the pH, preventing the dreaded "cal-mag" deficiencies in flowering.
Important Tray2Grow Tips for Tupur
• Do Not Pack It: When filling the fabric bed, do not compress the soil. Let it settle naturally. Compressing Tupur ruins its wicking ability.
• The "Coco pH" Shift: Even though this is an "organic" method, because the base is Coco, you should aim for a slightly lower pH than traditional soil.
• Reservoir pH: 5.8 - 6.2
• Soil pH: Will naturally buffer to around 6.2-6.4.
• Top Dressing: In a Tray2Grow, you cannot top-dress normally because the water comes from the bottom. To top-dress amendments later (Week 4 of veg, Week 3 of flower), you must:
1. Turn off the reservoir valve.
2. Sprinkle the dry nutrients on top of the soil.
3. Hand water them in from the top (just enough to melt them in, about 1-2 liters).
4. Wait 24 hours for the tray to dry out slightly, then turn the valve back on.
If anyone else has had success with Tray2grow and has suggestions let me know?