DTW HPA|High Pressure Aeroponic|DSH

Bazooka_ Cuttings from the Aerocloner

Bazooka_ HPA System Configuration Update: Installed two sprayers per root chamber. Nozzle Specs: Diameter 0.2 mm operating at 8-9 bar. Cycle Timer: 3 sec ON / 15 min OFF. Environment & Feeding Lighting: PPFD increased daily from 400 to 800 umol/(m2*s). Nutrients (EC): Slowly raised EC from 0.8 to 1.4 in increments of 0.2. Plant Health Observation: Magnesium Deficiency.

Bazooka_ Cycle Settings Timer: 3 sec ON / 10 min OFF Nutrients EC: 1.4 Environment (CO2 & Light) Lights ON: 07:30 AM CO2 Levels: Levels rise from morning to evening, peaking at a maximum of 1300 ppm. Ramp-up: From approx. 11:00 AM, levels reach 1000 ppm.

Bazooka_ Update FD 20: Strategy Shift & AI-Driven Optimization Methodology Note: This grow is executed with the support of advanced AI analysis. I feed my specific sensor logs (CSV) into an AI to analyze the data patterns deeply (e.g., correlations between fan speed and VPD stability) and to optimize my HPA cycles based on real-time data. We discuss and develop custom strategies together, leveraging the vast knowledge base available for Cannabis physiology. This diary entry is a result of that collaborative analysis. Image Analysis: Additionally, I use AI-based visual analysis to monitor plant health. High-resolution photos are scanned to detect early signs of deficiencies or stress (like leaf angle or discoloration) before they become visible to the naked eye. This provides an extra layer of quality control. Genetics & Training History: Started with 10cm clones of Dark Shadow Haze (Sativa-dominant). The Fear: Massive vertical stretch. The Action: Topped early, which resulted in a 5-day stall in top growth but massive root explosion in the HPA system. The Surprise: The high intensity of my 25W 660nm (Deep Red) LEDs kept them extremely squat and compact. The Fix: Activated 730nm (Far Red) to induce stretch via shade avoidance. It worked perfectly – the canopy opened up, and plants are showing extreme vigor. 💨 Fan Evolution (The Game Changer): Original Setup: Prima Klima AC Fan (2-Speed). Issue: Too dumb. Upgrade 1: 6-Inch (150mm) EC Smart Fan. Issue: Too powerful. Minimum speed (25%) was still too much for the 60x60cm tent, stripping humidity instantly. Final Solution (Incoming): Downsizing to a 4-Inch (100mm) EC Fan. This will allow precise low-end control to smooth out the VPD curve. 📊 Weekend Data Summary (Sat Night - Mon Morning): DAY Phase (Optimized): Temp: ~24.7°C (Stable) VPD: ~1.28 kPa ("Flatline" stability achieved by reducing light to ~900 PPFD) CO2: ~1092 ppm (Human powered + Tank boost) NIGHT Phase (Critical Challenge): Temp: Avg 19.6°C (Min 18.6°C) RH: Avg 79.6% (Max 88.5%!) Action: Night heating upgrade is mandatory to keep temps 21°C and lower RH. CO2 Strategy: Hybrid: Tank boosts to 1000 ppm at start-up. Human respiration maintains ~1100 ppm during office hours. No waste, full saturation. HPA Cycle: Tuned to 3s ON / 5min OFF to match the high metabolic rate. Future Strategy (Post-Upgrade): Once the new 4-inch fan is installed and VPD control is fully regained, I will reactivate the Turbo Mode: Pushing back to 1100 umol for maximum yield potential while maintaining 1200 - 1300 ppm CO2 continuously. UPDATE FD 17 Parameter & Nutrients EC 1.6 Switched completely to Metrop Maximal feathering () Cycle Settings Timer: 3 sec ON / 8 min OFF Plant & Phase Genetics: Dark Shadow Haze (Sativa-Dominant). Current Status: Flowering Day 17 (Peak aggressive stretch). Phenotype: Extremely compact, short internodes (approx. 1 cm at the tip). Lighting Adjustment: Added 730nm (Far Red) because internodal spacing is partly only 1 cm.

Bazooka_ UPDATE FD 20: NUTRIENT SWITCH & SYSTEM HYGIENE PROTOCOL Today marks the transition to the Early Flower phase (Phase 2). To ensure a sterile system without stressing the root zone, I used a specific "Seamless Switch" technique. SYSTEM HYGIENE (THE "SEAMLESS SWITCH") Since High-Pressure Aeroponics (HPA) is unforgiving regarding pathogens, a clean transition is vital. Buffering Strategy: Before draining the main reservoir, I filled the HPA accumulator tank completely with the old nutrient solution. This provides a buffer of ~2 hours of feed time, allowing me to mix and sterilize the new tank without interrupting the spray cycle or drying out the roots. Sterilization & Mixing Process: Silica First: Added BAC Silica to fresh RO/Tap water and let it mix/react for 15 minutes. This ensures stability before any other chemistry is added. pH Adjustment: Lowered the pH to ~6.0. This is crucial because Purolyt (HOCl) disinfects far more effectively at a lower pH. Disinfection: Added Purolyt and allowed the solution to sit for 2 hours to sterilize the tank and lines. Nutrients: After the sterilization period, I added the new nutrient profile (MR2, CalGreen, Additives). THE NEW MIX (PHASE 2 - EARLY FLOWER) The focus shifts from vegetative nitrogen to potassium and phosphorus to support bud sites. Target EC: 1.80 mS/cm Target pH: 5.80 Mixing Recipe (My 40L Tank vs. 100L Standard Ref): 1. BAC Silica Amount (40L): 7.5 ml Amount (100L): 19 ml Function: Cell wall strength (Mix first & wait!) 2. Metrop MR2 Amount (40L): 51.5 ml Amount (100L): 129 ml Function: 10-20-40 NPK (Primary Flower Food) 3. Metrop CalGreen Amount (40L): 15 ml Amount (100L): 37.5 ml Function: Calcium/Nitrogen (Structure) 4. Metrop AminoXtrem Amount (40L): 36 ml Amount (100L): 90 ml Function: Metabolism & Stress Relief 5. Metrop Enzymes Amount (40L): 10 ml Amount (100L): 25 ml Function: Root zone hygiene Note: Metrop Root+ has been removed from the regimen as root mass is sufficient. LOGIC This specific ratio (approx. 3.4 parts MR2 to 1 part CalGreen) pushes the EC to 1.80, providing the necessary osmotic pressure for the high-metabolism setup. By limiting Nitrogen, we shift the hormonal focus to flower production. However, we keep 730nm (Far Red) active to induce vertical stretch mechanically, ensuring an open plant structure for better airflow before the buds densify. LOGIC This specific ratio (approx. 3.4 parts MR2 to 1 part CalGreen) pushes the EC to 1.80, providing the necessary osmotic pressure for the high-metabolism setup. Nutrient Strategy: We are limiting Nitrogen to shift the plant's focus from vegetative leaf production to flower site development. Light Strategy: Simultaneously, we keep 730nm (Far Red) active to mechanically induce stretch. This creates an open structure with longer internodes, which is crucial for airflow and light penetration, even as the nutrient mix signals "blooming".