Good Day All!
I’ve read some issues folks have had and figured I’d done lots of research on these topics over the years including, but not limited to this community. Figured I’d share in the hopes it helps some of the new growers. I’m new to grobo, but not new to growing. This is not grobo approved, just my own grow guideline. Most important is to listen to your plants. As this is a guideline to use as reference you should be changing it based on your specific conditions, locations, seed genetics ect.
Utilizing a sample recipe from Grobo
Germination (10 days)
Early veg (14 days)
Veg (14 days)
Stretch/transition - marks the beginning of flower (14 days)
Full flower (37 days)
Flush (10 days)
Dry (2-5 days)
Cure (2-3 weeks but 4-8 weeks for optimal ranges)
(Germination - 10 days)
- Seedlings and clones like high humidity levels of 65-70%
- Reason: The root system is not established
- High humidity levels allow water intake through leaves
- Temperatures with lights on: 68-77 degrees (lights off: 4-5 C° lower)
(Early and Reg Veg (28 days)) - by this time you should have topped your feminized photo - 5 nodes - important continue these into the next phase. Remember you’re hurting your plant by cutting it, give it a few days to recover.
- Humidity levels can be lowered by 5% each week (acceptable range: 40-70% - ideally 65-70%)
- Temperatures can be increased a little bit (no obligation - no higher than 82 if possible)
- Reason: Roots absorb more water; evaporation through leaves cools plant(s)
- Temperatures with lights on: 71-82 (lights off: 4-5 C° lower)
(Stretch then Full flower (51 days)) crop, top, lollipop and LST is advised - make sure to never remove more than 1/3rd of your plant when cropping. This would be an ideal time to remove fan leaves that are blocking light to Bud sites. By now you should have no less than 8 Bud sites due to your topping. You’ll want to clean your plant up during this stage. Remove useless material on the bottom 3rd of the plant. We want to make sure the energy is focused on the Bud sites not leaves at the bottom.
- Humidity levels need to be lowered to 35-50% (important)
- You can get away with 55% (anything over 60% is typically real bad)
- It’s best to slightly lower temperatures in flowering
- Temperatures with lights on: 68-78.8 (avoid high temperatures)
(1-2 weeks before harvest - flush - remove everything, no more nutes, only add RO/Distilled Water mixed. I use Flawless Finish, but that’s a personal preference as an add-in.
- The following steps are not necessity, but can improve yield, flavour and appearance
- Bring down humidity levels as much as you can: 30-40% - target 30
- Lower daytime temperatures, and also increase the temperature difference (day/night)
- Temperatures with lights on: 64-75 (lights off: minus 5-10 C°)
Invest in your grow! Basic Tools you need to optimize your chances of a successful grow
EC, TDS & PPM meter ($15)
Ph meter ($62 temp and PH - they can be had cheaper)
Hydrometer (temps and humidity - $20)
Scissors (for a set for $20 designed for plants)
ScrOG/Trellis - making my own in addition to LST (free)
Jewelers ring ($10)
Medical gloves (free for me)
WAYS TO LOWER HUMIDITY
Add a fan to push more air. This can be internal or external pointing at the fan intakes
WAYS TO LOWER TEMPERATURES
Fans inside or outside pointing at the grobo fan intakes or turn up the AC
An alternative would be to safely remove extra growth from your “heathy” plant
humidifier - small portable ones can be added to the grobo, but likely never will need to be due to space constraints
Hope this helps some folks. If anyone wants to add or edit it feel free to do so or if the grobo team has issues I can edit or delete.
I’m online all the time so if you’re not comfortable posting in the forum and want help you can send me a DM. Lots of very knowledgeable users in this community; take advantage of their willingness to help!