For your 1st question.
“is there a point in time where you start to cut back on cal mag in late flower?”
So around the last 2-3 weeks you want to have lower nitrogen levels and want to kinda keep the cal in the same level
Cal mag for coco more just a make sure your coco was buffered Soaked in 2.0 ec cal mag.
Or done from the factory
So run off is more less just there to keep ur ph and Ec(p) in check. When plant up take food the ph can adjust. So maintaining 20% run off of your daily total waterings. So if each plant get 100ml a day they should have 20ml run off min
Based off your input ec and how fast they eat the food dictates your ec(p) level there are times you want it to be higher for salt stress
And how much run off is needed to keep ec in check
Next question. How often should you water
You can water your plants once a day and they will live but yeilds will suffer (my biggest failure)
Plus waterings is key and understanding the difference between vegetive and genitive
So for 1 gallon
- 3% shot is about 100ml
(1-4% is vegetive)
- 6% shot is about 200ml
(6-10%) is genative
Lights on wait 30 min give first shot (shot1)
Wait 15 min other shot (shot2)
Wait 15 min other shot (shot3)
Wait 15 min other shot (shot4)
By this time if your trying to be vegetive I should see some run off you added about 10-12% and thst was you over night dry back
For veg u want more more the. 10-15% over night dry back
For gen you want 30-40% dry back
Want to get to filed capacity 2-3 hours after lights on.
After filed copacity wait hour or 2 and give a shot. For veg if thst ur goal or gen if thst you goal. And based off how much water runs off right after thst shot will tell you how much % the plant drinks in 2 hours. And if you need to wait some or give shots Sooners.
After about 60min to lights off we try not to water and hope to get our over night dry back on point
So when you water one day and feed the other. All you doing is lowering your ec(p) ( pore ec) your input ec is ec(b) ec bulk)
Get ur self a solus and leave it in a plant
This is a little confusing topic but I’ll do my best to explain
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(Chatgpt) translation from above lol
Regarding your first question about cutting back on Cal-Mag in late flower, it is generally recommended to maintain the same level of Cal-Mag throughout the flowering stage. However, during the last 2-3 weeks of flowering, it is advisable to lower the nitrogen levels.
Cal-Mag is particularly important for coco growing as it helps ensure that the coco medium is properly buffered. Ideally, the coco should be soaked in a Cal-Mag solution with an electrical conductivity (EC) of around 2.0. Some coco brands come pre-buffered from the factory.
Regarding measuring runoff in coco, the primary purpose is to monitor pH and EC levels. When plants uptake nutrients, the pH can fluctuate, so checking the runoff can help maintain the desired pH range. It is generally recommended to have a runoff of about 20% of your total daily watering amount. For example, if each plant receives 100ml of water per day, there should be a minimum of 20ml of runoff.
Your next question addresses how often to water the plants. While plants can survive with watering once a day, it is important to note that yields may suffer as a result. The frequency of watering is crucial, and it varies between the vegetative and generative stages of growth.
For the vegetative stage, a 3% shot (around 100ml for a 1-gallon pot) is typically recommended. This means giving the first shot (shot 1) after the lights turn on, waiting 15 minutes, and then providing subsequent shots (shot 2, shot 3, shot 4) every 15 minutes. By the end of this process, you should observe some runoff, indicating approximately 10-12% over overnight dry back, which is suitable for vegetative growth.
For the generative (flowering) stage, a 6% shot (around 200ml for a 1-gallon pot) is usually advised. The same process applies, with shots given after the lights turn on and subsequent shots at 15-minute intervals. This higher percentage of runoff (around 30-40% over overnight dry back) is more appropriate for generative growth.
The goal is to reach field capacity, where the coco medium is fully saturated, within 2-3 hours after the lights turn on. After achieving field capacity, wait for an hour or two before giving another shot, depending on your growth phase (vegetative or generative). The amount of runoff immediately after this shot will indicate the percentage of water the plant has consumed within two hours. Based on this, you can adjust your watering schedule.
Towards lights-off, it is generally recommended to avoid watering and aim for overnight dry back to maintain the plant's overall health.
In summary, alternating between watering and feeding days helps regulate the electrical conductivity of the solution (ECp). The input EC (ECb) refers to the EC of the nutrient solution, while the ECp determines the concentration of nutrients available to the plants. By managing these factors and observing the runoff, you can optimize your coco growing process.