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Ace Malawi and Cycloptics Greenbeams: caught in the Under Current!

timmur

timmur

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GoldenSyrup said:
Hi dude, please consider that after around a week or two of having plants in there you might find yourself having to reduce the humidity as the plants contribute to the environment. Maybe only upgrade one fogger? Or get just one smaller one to try and knock it up another 10 or 20%.



Things are ticking a long great in here mate I'm still here watching :) Peace out
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I'm with ya. I bought one larger fogger and will see how it goes. Later in flower I'll be looking to keep lights on humidity much lower. For now though, optimum VPD calls for high humidity in veg so I'd like to get there. :tiphat:
 
timmur

timmur

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How do they look?

How do they look?

The girls looked a little lighter color green than they did yesterday, so I snapped a few pics. How do they look?

picture.php

View image in gallery​

 
gorilla ganja

gorilla ganja

Well-known member
What's those little green things in your room?:biggrin:

Just joking. Glad to see your up and running finally.
There is going to be some serious growth soon.
Best of luck and I hope everything runs smoothly.Looking forward to seeing what this set up can do.

Peace GG
 
timmur

timmur

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GoldenSyrup said:
Looking sweet as a nut to me mate great to see some plants !
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Bout time, right! :biggrin:
No one is more relieved than I am that plants are finally going! I'm one plant shy of having a full run, so I'm probably going to get a cut of Super Lemon Haze to run with the 8 malawi girls.
 
timmur

timmur

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gorilla ganja said:
What's those little green things in your room?:biggrin:

Just joking. Glad to see your up and running finally.
There is going to be some serious growth soon.
Best of luck and I hope everything runs smoothly.Looking forward to seeing what this set up can do.

Peace GG
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Hey gorilla thanks for stopping back in. Finally plants are going! :biggrin:

As soon as those roots drop down into the deep water, it's over!
 
mjlifestyle

mjlifestyle

Member
This is gonna be one hell of a grow, timmur! This sort of dedication and planning will pay dividends, no doubt about it. I'll be following this for sure.

I didn't go through all the 37 pages yet (that's gotta be a record, 37 pages with the seedlings just popping up now), so apologies if you've already covered this - do you plan on doing some sort of training? Topping, mainlining, LST, supercropping? You seem to have the space for it and certainly the patience required for longer veg and it'd be a shame to not train them.

I don't know what line of nutrients you're using, but the only piece of "advice" (with quotes, as it's hardly real advice) is to feed them lightly in the beginning. I only fed my Malawi after a full week of growing (in coco), starting at 1/3 of recommended dosage. Had a prior grow attempt which I had to end prematurely after 3 weeks (due to unrelated circumstances) and that time I burned them pretty badly by feeding too soon and too heavy (1/2 dosage right after first set of leafs).

Good luck!
 
timmur

timmur

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mjlifestyle said:
This is gonna be one hell of a grow, timmur! This sort of dedication and planning will pay dividends, no doubt about it. I'll be following this for sure.

I didn't go through all the 37 pages yet (that's gotta be a record, 37 pages with the seedlings just popping up now), so apologies if you've already covered this - do you plan on doing some sort of training? Topping, mainlining, LST, supercropping? You seem to have the space for it and certainly the patience required for longer veg and it'd be a shame to not train them.

I don't know what line of nutrients you're using, but the only piece of "advice" (with quotes, as it's hardly real advice) is to feed them lightly in the beginning. I only fed my Malawi after a full week of growing (in coco), starting at 1/3 of recommended dosage. Had a prior grow attempt which I had to end prematurely after 3 weeks (due to unrelated circumstances) and that time I burned them pretty badly by feeding too soon and too heavy (1/2 dosage right after first set of leafs).

Good luck!
Click to expand...

Thanks for the encouragement mj! Yeah 30 some odd pages of a grow log without any grow is some sort of record, though not the one I wanted! I jumped the gun on the log and shit happened!

That's all in the past. Now it's time to grow! I plan on mainlining these girls. I figure with fast hydro they shouldn't slow down much. I'm using Veg & Bloom and yes I read your threads and many others where people went heavy on the nutes in RDWC to their peril. Deciding where to start in this case was difficult because I had guidelines suggestiing keekping the nutes light when high levels of oxygenation are used and also others recommending more nutes for high light levels in a sealed environment with CO2.

In the end I started higher than I meant to at around 250 PPM, but it seems to have worked. I just checked nutes tonight and found that they finally dropped off to 160 PPM. I bumped them up to 320 PPM which again was a bit higher than I planned, but I'm hoping they needed that much of a bump. Once I get into the UC I will be very cautious with nute levels. Everything I've read indicates that that is a classic mistake and hopefully not one I make! :biggrin:

The real challenge in this sealed room is high CO2 levels that won't drop at night (no venting in the room at all) and low humidity when all of the lights are on. I would love to crank up the lights and really rock these things as planned, but VPD will be out of whack and may stress them. I chose to keep the lights at half throttle and keep the two mini foggers running full time. I'm currently at 75-80% RH and room temperature is up to 82 degrees. Leaf temperature is right at 79-80 degrees. As I mentioned earlier, I ordered another larger humidifier, but GrowersHouse called to say it was on backorder from the manufacturer and not a single warehouse anywhere had one. Meanwhile I'll either turn on some additional light and take a chance that I'll stress them or wait for the humidifier. Optimum VPD and less than optimum light, 350 micromoles, or 500 micromoles of light and 45% RH (less than optimum VPD? Maybe I'll split the difference.

One thing I did find out is that a fresh seedling can go straight into 350 micromoles of light for 18 hours in my environment without photoinhibition or stress. :)
 
mjlifestyle

mjlifestyle

Member
All I can say, since that level of environmental control is way above my level of experience (although I somewhat understand the principles, in theory), is that you should prepare for a marathon, not a 100m dash :) Especially with such a long flowering sativa and with training in mind. And it's way easier (as I've learned) to correct something you under-do than something you overdo, be it feeding or light.

I'm absolutely sure you're gonna watch them girls like an eagle, so watch them tell you what they need... something that sounded like some stoner bs to me a while ago, but I'm slowly beginning to understand, even after just 2 months of growing.

One thing I forgot to ask and you just reminded me with your CO2 issue at night - have you considered 20/4 instead of 18/6? There are a few posts on the web about a study some growers did which showed the 20/4 schedule to be the best yielder (followed by 18/6 and then 24/0). I can look it up if you want, I think I still have the link somewhere. Although be warned that there are not many details about how controlled was the experiment, just a report about it with comparative results in %.
 
timmur

timmur

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mjlifestyle said:
All I can say, since that level of environmental control is way above my level of experience (although I somewhat understand the principles, in theory), is that you should prepare for a marathon, not a 100m dash :) Especially with such a long flowering sativa and with training in mind. And it's way easier (as I've learned) to correct something you under-do than something you overdo, be it feeding or light.

I'm absolutely sure you're gonna watch them girls like an eagle, so watch them tell you what they need... something that sounded like some stoner bs to me a while ago, but I'm slowly beginning to understand, even after just 2 months of growing.

One thing I forgot to ask and you just reminded me with your CO2 issue at night - have you considered 20/4 instead of 18/6? There are a few posts on the web about a study some growers did which showed the 20/4 schedule to be the best yielder (followed by 18/6 and then 24/0). I can look it up if you want, I think I still have the link somewhere. Although be warned that there are not many details about how controlled was the experiment, just a report about it with comparative results in %.
Click to expand...

Hey mj. Regarding the photoperiod and yield, my view is that until someone points me to a grow where DLI is factored into the equation, I can't draw any conclusions. Changing photoperiod adds light unless you alter PPFD. If you don't alter these parameters then you can't draw any valid conclusions. I would guess that 20 hours of light would yield more most every time unless you are able to deliver more than the optimum DLI in a 20 hour period. Not sure what that value (optimum DLI) actually is, but the point remains.

The other question is, what is the value of the dark period, if any? Are there reactions going on in the dark period that should be considered? I don't know, but they may be a factor as well.
 
mjlifestyle

mjlifestyle

Member
I gotta admit that's a bit more than I am prepared to look into at this point :) I did read a bit about DLI & PPFD, but for my purpose (just personal use) it doesn't make sense to have a really big grow op, with every single environmental factor tweaked to perfection.

As for your question at the end, that's one of the reasons I didn't go for 24/0 (although I've read about 24/0 grows) and opted for 20/4 instead. I'm not gonna go with the anthropomorphism argument but, without knowing a whole lot about it, at this point I am sure the dark period has its merits. Cheers!
 
timmur

timmur

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Sorry for the lack of updates. I had to take an unexpected business trip right when I was trying to get things dialed in. Before I left, I started to get a mag deficiency, but couldn't tell for sure if it was that or VPD issues. I was having trouble maintaining humidity with all of the lights on and I believe this contributed to the problem.

Since I came back from the trip I've been hitting the girls with foliar applications of mag and they are bouncing back. I didn't get a chance to get any new photos, but I'll get some posted tomorrow. They were drooping a lot too, but dissolved O2 was at 90 -115% saturation so they weren't starved for oxygen. Anybody have other ideas on what issues there were? Lower leaves were yellow and new growth was green and healthy except for the drooping. Nutes were @ 200- 250 ppm (700 scale) during most of the time with pH at 6.3 to 6.40 the whole time. Roots are white and healthy. Growth has been slow. Nodes are stacked very tight.

The biggest problem so far has been getting the VPD right. I had 3 foggers running and still not able to get 70% humidity! I had to dial back the light to get the humidity up. I think small plants just don't transpire enough to help contribute to the humidity in the room.

Final note. The girls are still in the mini DWC, but I plan on putting them into the UC this weekend (if they're progressing). The root mass is large enough to take off in the UC without a stall).


 
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