Mephisto Genetics Will my Mephisto run be as small as previous runs?

[slowandeasy]

@slowandeasy
That's an interesting shout on the under feeding.
The foliage on both grows during veg was always a deep green though & when the tips started to slightly yellow I assumed the roots had fully made it out of the biobizz & were soaking up the rich Bat Special (npk 14-16-18). Also there was some slight clawing but if these could all be symptoms of deficiencies as well then that's very possibly the answer.

I'm running 6 at the moment. 4 x 2gal & 2 x 4gal. The plants in the 4 gal are obviously bigger but not x2 the size.
Some pics below:
View attachment 1164760View attachment 1164761View attachment 1164762View attachment 1164763
View attachment 1164771

@slowandeasy
That's an interesting shout on the under feeding.
The foliage on both grows during veg was always a deep green though & when the tips started to slightly yellow I assumed the roots had fully made it out of the biobizz & were soaking up the rich Bat Special (npk 14-16-18). Also there was some slight clawing but if these could all be symptoms of deficiencies as well then that's very possibly the answer.

I'm running 6 at the moment. 4 x 2gal & 2 x 4gal. The plants in the 4 gal are obviously bigger but not x2 the size.
Some pics below:
View attachment 1164760View attachment 1164761View attachment 1164762View attachment 1164763
View attachment 1164771

A couple thoughts by the pics you added. I see the tip burn. But look at the pics from week 3 to 5. This is when budding starts to kick in and pk is needed more. I see muktiple plants that are either hungry at week 5 or overwatered, but I can tell by the color of your mediun that you are not overwatering. If anything, have you ever Underwatered? Running plants too dry can cause build up symptomsx even 1 time underwatered can produce tip burn. Your plants look really healthy at week 3, but by week 5 look hungry to me. The other possibilty to consider is lamp distance and power. If you underfeed and have strong lights the plants will yellow fast. I dont know how much or how often you feed, but your problems start after week 3 and to me they look hungry and under developed from week 5 on. Clawing downward is N tox, and excessively dark leaves are also a symptom. I dont see anything excessive you might be on the boarder of N tox? By week 5 they are yellowing, so def not N tox then. Do you add any pk boostersx teas or top dress? Peaxe, slow

 

[Benjidubwise]

couple thoughts by the pics you added. I see the tip burn. But look at the pics from week 3 to 5. This is when budding starts to kick in and pk is needed more. I see muktiple plants that are either hungry at week 5 or overwatered, but I can tell by the color of your mediun that you are not overwatering. If anything, have you ever Underwatered? Running plants too dry can cause build up symptomsx even 1 time underwatered can produce tip burn. Your plants look really healthy at week 3, but by week 5 look hungry to me. The other possibilty to consider is lamp distance and power. If you underfeed and have strong lights the plants will yellow fast. I dont know how much or how often you feed, but your problems start after week 3 and to me they look hungry and under developed from week 5 on. Clawing downward is N tox, and excessively dark leaves are also a symptom. I dont see anything excessive you might be on the boarder of N tox? By week 5 they are yellowing, so def not N tox then. Do you add any pk boostersx teas or top dress? Peaxe, slow

Yes Slow, some amazing insights there! During late veg & through flower I'm watering every 3 - 4 days. The 2gals are getting .75l and the 4gals are getting 1l. There is always run off. The girls never look visibly thirsty with thirsty leaves but they're maybe on the edge. I think I over watered during early veg in my first grow so was potentially over cautious on the second run.
I haven't been using anything other than the products listed above (mainly biobizz). I read (on here I think) that people recommend holding off on the biobizz bloom until stretch has finished. I think that stuck in my head & I've probably underfed them.
As they seem so lush during veg without much/any grow nutes added, do you recomend I continue like this but possibly start with the bloom nutes from showing sex?
Also, I have this product from a UK living soil company that I bought early on but haven't used. It's a top dress but I don't know if it's more intended for long term living soil or if its suitable for my purposes.
Ingredients are:

4 cup Basalt
2 cup Kelp
1 cup Krill
I cup Neem
2 cup Gypsum
2 cup Charge (insect frass)
2 cup Fish Meal

Could this be a suitable addition somewhere in late veg? If so what amount per gallon of medium would you recommend?
Thanks for your help!

 

[slowandeasy]

Yes Slow, some amazing insights there! During late veg & through flower I'm watering every 3 - 4 days. The 2gals are getting .75l and the 4gals are getting 1l. There is always run off. The girls never look visibly thirsty with thirsty leaves but they're maybe on the edge. I think I over watered during early veg in my first grow so was potentially over cautious on the second run.
I haven't been using anything other than the products listed above (mainly biobizz). I read (on here I think) that people recommend holding off on the biobizz bloom until stretch has finished. I think that stuck in my head & I've probably underfed them.
As they seem so lush during veg without much/any grow nutes added, do you recomend I continue like this but possibly start with the bloom nutes from showing sex?
Also, I have this product from a UK living soil company that I bought early on but haven't used. It's a top dress but I don't know if it's more intended for long term living soil or if its suitable for my purposes.
Ingredients are:

4 cup Basalt
2 cup Kelp
1 cup Krill
I cup Neem
2 cup Gypsum
2 cup Charge (insect frass)
2 cup Fish Meal

Could this be a suitable addition somewhere in late veg? If so what amount per gallon of medium would you recommend?
Thanks for your help!

Hey I dont know the amounts of the Organic ammendment you have. It is a basic organic ammendment, you can use it at the sign of preflowering and every 2 to 3 weeks as a top dress. Read the instructions if they have them, because I dont want to tell you how much to add. I use 1/4 cup of my dry ammendment with EWC, Bloom Top Dress mix, and a handful of soil. But thats for my needs. Knowing that you did not have to feed much pr st all in VEG leads me to believe that underfeeding is taking place at preflower stage and beginning of flower. Because within 2 weeks they get hunger signs quickly. If you only water Every 3 to 4 days, you can potentially underwater, which even 1 time too much can cause Tip burn. Not saying that is the case, but it is possible to underwater and not have Droppy. Wven if you dont get droopy leaves from under watering it can cause overfeeding symptoms if the roots get too dry. Do you lift your pots to see the weight or how to do you guage when to water? Do you notice if the 4gal plants look greener than the 2 gal? Or is a certain strain yellowing faster? Peace, slow

 

[Benjidubwise]

Forgot to mention. My light us comprised of 4 x
120 Pcs Samsung LM301B Diodes
& a 69w "red strip" that is made up of
108 x LM301H
4 x LH351H Deep Red
2 x LH351H Far Red

It is a big light in that tent!

 

[Benjidubwise]

I dont know the amounts of the Organic ammendment you have. It is a basic organic ammendment, you can use it at the sign of preflowering and every 2 to 3 weeks as a top dress. Read the instructions if they have them, because I dont want to tell you how much to add. I use 1/4 cup of my dry ammendment with EWC, Bloom Top Dress mix, and a handful of soil. But thats for my needs. Knowing that you did not have to feed much pr st all in VEG leads me to believe that underfeeding is taking place at preflower stage and beginning of flower. Because within 2 weeks they get hunger signs quickly. If you only water Every 3 to 4 days, you can potentially underwater, which even 1 time too much can cause Tip burn. Not saying that is the case, but it is possible to underwater and not have Droppy. Wven if you dont get droopy leaves from under watering it can cause overfeeding symptoms if the roots get too dry. Do you lift your pots to see the weight or how to do you guage when to water? Do you notice if the 4gal plants look greener than the 2 gal? Or is a certain strain yellowing faster? Peace, slow

Of the four 4gal pots the 3 bigger girls yellowed before the smaller one & well before the 4gal pots (in fact the 4gals are still pretty green now). I assume this is because they'd gotten through the available nutes in the soil by that point. This was probably around week 5 & when I started adding bloom ferts... too late by the sounds of it.
I just lift the pots to gauge when they need water but maybe I'm waiting too long.
There was definitely one watering/feed when I really thought they could have done with it the day before.

 

[slowandeasy]

Forgot to mention. My light us comprised of 4 x
120 Pcs Samsung LM301B Diodes
& a 69w "red strip" that is made up of
108 x LM301H
4 x LH351H Deep Red
2 x LH351H Far Red

It is a big light in that tent!

Do you have a controller to adjust the intensity? Too much light will cause yellowing faster when the plants get hungry. The reason the 4 gal stay greener is because of the amount of soil is almost 2x the amount. In Organics the pot size is very important, for that very reason alone and why I asked if the 2 gal yellowed faster. Most likely the available nutes in the soil was delpeated by week 5. You can top dress before flower starts, but I believe you use nutes as well. Try to keep your plants moist, not too wet snd not too dry. I much prefer to water less amounts, but more often. Honestly 1 liter per 3 to 4 days is not very much. I use a gal per day per plant in my SIPs. Which BTW, you may want to try in the future. You wont have to worry about over or under waterings. Good luck, slow

 

[Benjidubwise]

There is a dimmer on the driver so I could reduce the output. Wouldn't it be better to keep the light at full power & just give more nutes?

I use a gal per day per plant

Are you in soil? When I give 1L, 30-40% comes out as runoff & the pots are still a reasonable weight a couple of days later. If I tried to give 1gal, I reckon most of it would end up down the drain & if I did it daily I'd be scared I was drowning them
As I'm at the end of this run, I might just try daily watering & see how they take it.

 

[slowandeasy]

There is a dimmer on the driver so I could reduce the output. Wouldn't it be better to keep the light at full power & just give more nutes?



Are you in soil? When I give 1L, 30-40% comes out as runoff & the pots are still a reasonable weight a couple of days later. If I tried to give 1gal, I reckon most of it would end up down the drain & if I did it daily I'd be scared I was drowning them
As I'm at the end of this run, I might just try daily watering & see how they take it.

There is such a thing as too much light, feeding more often is a requirement with stronger lights. If you read my post I use SIPs. I use soil, but SIPs use a lot more water than Top Feeding. I didnt tell you to use a Gal per day, but 1 liter every 4 days is not much water. I actually suggest watering more frequently, but less amounts. Avoiding dry cycles, and keeping moist....never soaked. But what concerns me most is that you are only using 1 liter every few days and 30 to 40% comes out as runoff. Thats crazy. Possibly try using a Solo cup every day or 2 and DO NOT aim for so much runoff. Thats too much runoff anyways and its not ideal. Peacex slow

 

[Benjidubwise]

@slowandeasy Thanks for all the points. Seems like water & nute uptake is where I need to focus on the next round. The SIPS system looks pretty interesting, I'll definitely do more reading into that.
Mephisto package arrived today. Should be putting bean to soil in the next 10 days!