I recently started my first grow that made it past germination & into a DWC (Drain to Waste) hydro set-up. Due to my inexperience, I have a ton of questions but will try and consolidate them & provide a general idea of my set-up. Any advice is very much appreciated (I’m equally exited and anxious about the process ):
Paper towel method for germination. 1 Gold Leaf Fem seed from ILGM
Seed placed into rockwool plug (buffered in pH 5 H20 for 2 hours) after tap root emerged
Seedling quickly outgrew the rockwool plug, with the taproot emerging from the bottom on day 6 (Day 1 = germination using paper towel method). Rockwool & seed were placed in a humidity dome at high humidity.
Placed seedling & rockwool plug into mesh basket of DWC container with clay pellets (washed)
Very light nutrient mix prepped in DWC container (8 Gal container) - 25% of the recommended seedling feed schedule on General Hydroponics Micro/Flora/Bloom series (2.5 mL each).
Distilled/Tap water used to fill the DWC container - 37 PPM (H20 only)
Ambient Day Temp: 75-77 F / Ambient Night Temp: 68-70 F / H20 temp: 68.4 F / Ambient Humidity: 45-60 %
Lighting: 18/6 Hour on/off schedule - 150W HPS Sun Systems + 40W LED grow light for added blue light
Misc. Info - Exhaust fan running 24/7 through a carbon filter - An additional cooling fan is present inside the grow tent to control ambient temp (HPS light gets very warm and is at it’s highest point of elevation within the tent)
Day 7 (Current):
Major Question at this point:
- My PPM was at a comfortably low rate after H20 and v. light nutes were added (about 90-110 PPM). Balancing the pH became an issue - In order to maintain a 5-6 pH level within the system (using litmus test paper), pH low (General Hydroponics) was added and raised the PPM to almost 500. I drained and re-filled the system twice with the same result of the pH low drastically raising the PPM to reach the desired pH - is this cause for concern given the young age of this seedling? PPM is currently sitting at 518 with about a 5.5 pH. Should I wait it out and see how the plant responds or drain again and attempt to re-fill to achieve a lower PPM? Is there a better method of lowering pH without jacking up your PPM?
I am planning to add additional nutrient additives on top of the GH Micro/Flora/Bloom once the plant reaches a legitimate Vegetative Stage & Beyond. In no particular order - these are what I have planned based on research from other Hydroponic grows:
Snow Storm Ultra
Thanks in advance for any help - this Forum has been wonderful to learn from. I’m hoping I can use it to finally achieve some smokeable results!