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Grow Diaries Proud Mary scrog in NFT

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dragonfire
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Four cuttings from a plant I picked from a seed grow of Proud Mary by Mr Toad at Boneyard Seeds. The genetics are SFV OG x Angel (1996 Romulan x 2005 Cataract Kush). There are 2 plants each in 2 small 20L Gro-Tank NFT systems side by side in the 1mΒ² grow room.

They have been in the NFT system for about 2 weeks in a 1mΒ² veg room crammed in with other plants. I moved them into the flower room a couple of days ago (light still on 18/6), and put the scrog net in yesterday. I usually give them about a week of veg in the flower room before flipping the light, but these seem to be growing pretty fast and may not need the full week.

They are getting 3ml/L PM Hydro Grow and 0.5ml/L Magne Cal at the moment. They also get frequent foliar sprays of 50ml/L Cold Pressed Liquid Seaweed, 10ml/L Fulvic, 2ml/L Liquid Silicon and 1ml/L Polysorbate (wetting agent)

Some pics from before and after fitting the scrog net - I let them get a bit too tall, so the scrog looks a bit brutal at first.

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artmann
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Looks good.Β 

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dragonfire
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Plants yesterday looking looking like they've recovered pretty well from a severe scrogging. No doubt they'll need more before they are properly budding - I'm trying to get wall-to-wall coverage and plenty of budsites before I leave them alone.

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Gave them another foliar spray as mentioned in the previous post. Hopefully it's a way of giving them some organic components without getting anything nasty growing in the reservoir.

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dragonfire
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There hasn't been time for much more training as they have grown too quick. There's good coverage wall-to-wall so I flipped the light to 12/12 four days ago.

I stripped the bottom of the branches as soon as the topgrowth had shaded it out. I've got an oscillating fan blowing from underneath which rustles the canopy nicely.

it's looking good at the moment, but the humidity is far too high - I'll need to do something about it within a few weeks.

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WoodI2
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@dragonfire, looking good mang, deff wall to wall. Yep humidity can real get up there, I start with a exhaust fan controlled by a Inkbird, then I move up to a dehumidifier. A plant only retains a very small amount of what they drink, less than 10%. So when my plants are drinking 2-3 gal/8-12L, there's a lot of moisture that has to be removed. But I don't lower the humidity till the second week or more of flower. The Plant can still handle 65% RH till buds start forming, that's when I start dropping it.

If you just flipped then wait for 21 days and then do some defoliating after the stretch, removing some leaves will help to get the air flow. Good luck Bud!! πŸ–οΈ Β 

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dragonfire
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Thanks for looking in @woodi2.

One thing I like to do early on is darken the floor, I think electricity is too expensive to waste lighting up the floor. Even after defoliating I like to leave a base layer of leaves to intercept any stray photons that get past the buds.
I've already been taking off some bigger leaves from the canopy but the plants have been growing so fast I'll have to clear out some of the growth from between the nets as well. I'll do that in the next day or two - which will be about 21 days. πŸ‘Β 

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This is the first time I've run this plant in a scrog - I just did a trial grow from seed in compost in smallish pots. I knew it stretched a bit, but in NFT it's really gone for it. Much taller than I was expecting. 😲 

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They're just coming up to 3 weeks - the flowers are starting to get going. This is only the second grow I've done under LED, I used a 600W HPS before. I find the lack of heat is tricky in my environment. I think my only option is to get a dehumidifier, though I haven't worked out how I pay for one at the moment.

Anyway so far just minor problems and the plants are looking healthy so shouldn't complain.

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WoodI2
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@dragonfire, hey man your doing great. My environment outside can go from extreme high humidity and heat to very lower and cold so everyday can be different and adjustments can be made if that what your able to do. I don't like to grow in the summer here but keep finding myself with a grow in the heat and humidity fighting it the whole way. So if you get a dehumidifier it does put off heat and that can go either way as far as help or hurting. So this last summer I took two dehueys, one in the basement and one in the grow room to lower my humidity enough, (in the whole house) and it was a fight and took a while to start to see results. OR live with the humidity and just keep a lot of air movement works well to. Keep blowing air up their ass like you are and they'll be happy.

  They should settle down soon and you can see where your at then, but hey it the power of hydro, it grows them big so be prepared!! 🀣 that's a good thing!!  

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dragonfire
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Thanks @woodi2 hopefully the defoliation will help the humidity a bit, but when the ambient humidity outside is hovering around 90%, and I still haven't got a dehumidifier my options are limited. 😰

I've gone quite heavy with the defoliation this time, I cleaned out most of the leaves below the top net and got rid of a lot of spindly growth that's not going to do anything useful.

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I'm hoping the stretch has just about finished now, particularly as the light is as high as it will go without me having to get the drill out and put a new fitting in the ceiling. πŸ˜‰Β 

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@dragonfire Looking good mate, like Woodi said, just make sure the air can circulate well around the scrog and youll do fine. Plants look great man and youll get a good harvest out of this Smile

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Move the air, move the air, oh and don't forget to keep the air moving! lol You've got an Aray so you should be peachy, yeah you have to deal with what you've got and your doing great. Hold her steady and things will be find. πŸ‘Β 

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dragonfire
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Well, after surprisingly straightforward negotiations with Mrs Dragonfire I now have a dehumidifier - I went for a pay in 3 instalments option to lessen the blow. πŸ˜†Β 
Humidity was up to 82% at times, which is just not workable, so I had to go for it. It's down to 58% at the moment which is much better.

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It's looking pretty good, but there's some clawing of the newest leaves. It looks to me like the sort of thing you get with overwatering, so I thought it might be to do with the high humidity and lack of transpiration, but would be interested if anyone has other thoughts.

They're now at 4 weeks flowering, the buds are really getting going now and the resin is starting to accumulate.
I'm still just giving them 3ml/L of the Plant Magic Hydro Bloom plus Magne Cal supplement - I stopped the foliar feeds a week or two ago.

Overall - quite happy, but staying alert. Smile Β 

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dragonfire
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Another update, and things seem to be going well just now.

Further thoughts about the clawing - My EC/PPM meter is not working properly so I don't know the exact EC. The plants were getting 3ml/L of feed which would usually be about standard at this stage of growth, but I thought these were starting to look slightly overfed. The leaves were quite dark green and there was just the beginning of tip burn as in the pic.
All the science based information I've come across in the last couple of years suggests that flushing doesn't achieve very much, and the best way to avoid ending up with high levels of nutrient in your weed is not to put it in there in the first place. That is the approach I'm trying to take, so hopefully it won't have done much harm and I've dropped the feed to 2.5ml/L and dropped the CalMag.

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The dehumidifier is still keeping the humidity at 58-60% which is workable. The ambient humidity is back up to 90%+ so I'd have no chance without it.
You can see in the pictures that there is already a good dusting even on some bigger leaves. It's starting to look nice now. πŸ˜‹Β 

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dragonfire
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It's now 6 weeks into flowering, theoretically another 4 weeks to go, though they may need a touch longer.Β 

Generally going pretty well, though the last pic shows some paling between the veins on a couple of the top buds.Β  I know I've read something about this lime green patterning being a particular deficiency - possibly zinc? Anyway, I think this sort of thing is often either PH or overfeeding causing lockout. The PH is fine, so it may be overfeeding. The roots don't look as perfect white as I'd like, but I don't think there's a problem at the moment, another thing to keep an eye on though. I had pythium recently which trashed 2 grows, since then I've been using Alien Root Rot X which seems to have sorted it out.

About a week from now, I need to decide whether it looks like they're going to finish in the 10 weeks or go on for maybe another week. Three weeks from the finish I want to switch to Vitalink Finale nutrient with no nitrogen and add some Botanicare organic Pure Blend Tea to help with flavour, until final flush in the last week. Hopefully, I can get away with adding some organics to the hydro tanks that late in the grow. I'll flush with the Root Rot X, in between tank changes.

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Nice grow dude. You know what your doing. How you finding the aray 3? I was thinking of getting the two ( got a smaller tent). Will keep updated hope to see a good harvest. Cheers dude.

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Thanks @mcgrower. The Aray seems very good, the one I've got is the older 270W, the new version is 250W with Samsung LEDs.
Mine replaced a 600W HPS and looks to be doing better - seems to be covering the 1mΒ² pretty well. Will need to see the result to be sure I suppose, but looks impressive so far.

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What a monster of a grow awsome work man looking wicked Thumbs Up Β 

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dragonfire
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Thanks @firetop95. Happy with it so far. 😎

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Nice bush Buddy! lol Looks like you might want to flush the roots, the way the leaves are distorting shows it could have a root problem. Maybe. πŸ‘Β 

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dragonfire
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Thanks for looking @woodi2, interestingly I had a similar thought last night, so I gave them an overnight flush with high strength Root Rot X. I let it run on for a few hours into lights on. I've just emptied it out and refilled with a standard dose of Root Rot plus just a low level of base nutrient - I'll see where that takes it.

Thanks for the input, it's reassuring to have another view on the grow. πŸ‘Β 

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@dragonfire, look at them roots for sure, I could be wrong. I definitely don't know many strains but they look a certain way that I think I've seen before and a check of the roots will tell. It's very common for a plant in hydro to have some type of a rot root, Pythium type of bacteria and live with it. The plant will hold it a bay for as long as it can, sometimes quite awhile, in the end only one wins. When a plant is younger the Pythium usually always wins, but as the plant gets larger and more mature it can fend off more predators, healthy plants do better to. Sorry but I don't have any knowledge of these products your using but good luck, at least your looking in the right direction first.Β 

Β Is this the product from Ali-Bongo?Β  hypochlorous acidΒ  Β 

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dragonfire
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@woodi2 yes, it's hypochlorous acid (HOCl).
I've been working on the assumption that there's pythium in the system, so I've been adding the HOCl at each tank change, which I do every 4 or 5 days. I hadn't bothered with the overnight flush for a few weeks, so the pythium may have increased a bit.

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@dragonfire, have you been rinsing the HOCI water through the hydroton? I use beneficial bacteria and even when I flush with H2O2 I'll pour it over the hydroton to make sure I'm getting everything. That stuff can be a bitch, I finally went with H2O2 to kill the Pythium and then returned to back to a live grow with beneficial after it dissolves away. That's the only thing that wipes it out for me, and the quickest. Hell I completely cut off a plants roots system because it was so rotted and treated it with H2O2 and a week later the roots were epic, I was amazed. lolΒ  I don't know about HOCI but good luck.

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dragonfire
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@woodi2 this is a straight NFT grow, so no Hydroton, but the plants are in small rockwool cubes on the tray and I haven't been running the sterilising solution directly through the rockwool, so that's actually a very good thought. I'll make sure I run some through the rockwool next time.

Thanks for the nudge. πŸ˜‰Β 

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dragonfire
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Update is a bit late, there's just under 2 weeks to go, so a week ago I switched to Vitalink Finale nutrient with no nitrogen plus Botanicare Pure Blend Tea organic supplement. I give them an overnight flush with the HOCl between tank refills, remembering to run some through the rockwool as well, but empty it all out again before refilling with nutrient as it doesn't get on with organics.

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The paling among the top buds has continued, and they're starting to show little brown marks, looking more typically like calcium deficiency. I checked the PH with a liquid test kit, and it looks like I've been around 5 - 5.5, where I thought I was keeping it about 6.2 - 6.5. That would fit neatly with a calcium def. I should have been more thorough checking, it's probably cost some yield.
Overall they're looking pretty good, they're getting nice and frosty, and very sticky, so still hoping for a respectable crop. πŸ˜‹Β 

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WoodI2
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@dragonfire, it looks good to me man. You worked with what you had and it worked out. You've got yourself a bunch of buds, that'll last a couple of days. lol Your next grow hopefully won't have this problem, I'll bet. lol Yeah if you can adjust the PH to 6.0, they would have better access to the calcium for sure. Good luck, nice work.

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dragonfire
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Just one week to go now if they're on schedule. I've switched them to Clearex flushing solution only for the final run in. I used to use plain water for the flush, but I think it reduced the quality, at least in taste and smell.
I'll turn the light down to 75% for the last few days, they don't need full strength as they coast over the line. With the HPS I always used to raise the light at the end which also reduced the canopy temperature as well. This new LED/dehumidifier combination will be a bit different I suppose, but shouldn't be a problem.

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The resin is accumulating nicely, and I'm getting a hint of cherry menthol cough sweets in the smell. 😍 The buds are not huge but there's plenty of them and they look quite dense. I'm actually expecting something very nice from this. Smile  

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