JiggiLotus
Well-Known Member
Hydroponics and synthetic substrate sound complex and stressful. I thought we were supposed to be stress training plants not the plants stress training us.
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True. Coco core you gotta water it all the time. I mix it into my potting soil to keep my soil from saturating. If I plant anything in it just Coco...Death.Your coir has not been treated and buffered properly. Increase your feeding frequency til you reach 0.3 EC above your input on your runoff water. It will eventually settle but needs time to settle if it hasn't been treated before use.
Your biggest problem is you're treating a hydro/coir grown plant like a soil grown plant. Currently you're creating a medium that goes from having correct pH and EC to crash within 48 hours. Coir and hydro needs constant replenishment and needs to be fed several times a day to flourish.
Hope that helps, Cheers!
Fox Farm is using several types of compost mixed with finely shredded Coco Coir and some Perlite. The Coco Coir is a replacement for the Peat Moss used in the more traditional potting soil mixes. Growers have talking about making these sorts of mixes for years as a way to avoid over-harvesting the remaining peat bogs. And as a way to use the piles and piles of discarded coco hulls found in areas that grow or produce coconuts instead of letting the stuff decompose which can take 5 to 20 years.Soil Fox Farm Coco Loco
Is this plant being grown in a tent or some sort of closet or cabinet? If so it should be easy to bring the temperatures up to help the plant grow better.Temps 72 RH 50
As mentioned, mix and feed at the recommended dose.Dyna Grow Foliage Pro, Bloom, Protekt, Cal Mag
Classic signs of low Calcium. Shows up a lot on indoor grows with LED lights. Use the amounts recommended by the company making your Calcium supplement. The damage on the leaves is there and will not go away but once the plant finds the Calcium it needs there will be no new copper brown colored spots showing up and none showing on new leaves.The problem started on middle fan leaf edges and is progressing to the tips, a brown rust color. Lower leaves show slight brown, and a few of the sugar leaves are starting to brown as well, mainly middle fan leafs though.
Do you mean the center fingers on the fan leaves. Fan leaves usually have 3, 5, 7 and sometimes 9 fingers growing off of a single stem. Seems to me that having the bronze or copper color start to show on the middle finger was pretty usual until I started using a Calcium product on a regular basis.... few of the sugar leaves are starting to brown as well, mainly middle fan leafs though.
If I were to follow recommendations on the bottles for Dyna Gro I would totally fry my plants. He's growing in coir/hydro and you won't find recommendations for running Dyna Gro in Coco Coir on the back of the bottles.Fox Farm is using several types of compost mixed with finely shredded Coco Coir and some Perlite. The Coco Coir is a replacement for the Peat Moss used in the more traditional potting soil mixes. Growers have talking about making these sorts of mixes for years as a way to avoid over-harvesting the remaining peat bogs. And as a way to use the piles and piles of discarded coco hulls found in areas that grow or produce coconuts instead of letting the stuff decompose which can take 5 to 20 years.
The company uses/mixes in dolomite lime and oyster shells to buffer the pH levels. When the mix is ready they ship it with a pH of 6.3 to 6.8 so basically it is all set to go as the traditional soil base mix it is.
Thinking about it, if the company mixed all those various composts with Peat Moss no one would be mentioning trying to treat is as a hydroponic growing medium and jumping through hoops trying to change the medium's pH levels. All of this and more is on the companies web page for Coco Loco. Any questions then call or eMail them for explantions. They are friendly and will pick up the phone if calling during normal business hours (California time) or respond quickly to eMail.
Is this plant being grown in a tent or some sort of closet or cabinet? If so it should be easy to bring the temperatures up to help the plant grow better.
Or is it in a room in the house like a bedroom or unused room? If it is in the corner of a room then the whole room has to be heated which takes a bit more planning and effort and a room at 82F can be uncomfortable even in the winter, especially if it is being used as a bedroom.
As mentioned, mix and feed at the recommended dose.
Classic signs of low Calcium. Shows up a lot on indoor grows with LED lights. Use the amounts recommended by the company making your Calcium supplement. The damage on the leaves is there and will not go away but once the plant finds the Calcium it needs there will be no new copper brown colored spots showing up and none showing on new leaves.
Do you mean the center fingers on the fan leaves. Fan leaves usually have 3, 5, 7 and sometimes 9 fingers growing off of a single stem. Seems to me that having the bronze or copper color start to show on the middle finger was pretty usual until I started using a Calcium product on a regular basis.
Or do you mean the the problem is starting to show on the fan leaves that are more in the center or the plant. Some problems can start to show near the bottom of the plant, the middle or near the top. So, if the problem is starting in the middle area it could be an indication that something else might be happening at the same time.
It should not be hard to get your grow back on track. Have fun and enjoy your growing adventure.
You need cal mag in your plain water first. Because it's coco.Soil Fox Farm Coco Loco
Light 100 watts LED 16 inches (SF-1000)
Dyna Grow Foliage Pro, Bloom, Protekt, Cal Mag
PH in around 6.5 out around 6.5
Feeding at around 350 PPM's every watering.
Temps 72 RH 50
Watering to 20% runoff RO water, every 2-3 days. (heavy watering, wait for pot to feel light before watering again) Measuring PPMs of runoff around 300, PH around 6.5
Hi all, I'm many grows in now and make it to harvest, but I have the same problem every grow mid to late flower. It starts with a few spots and moves very fast taking almost all of my fan leaves in the end. My buds make it to harvest, but I know they arent all they should be ! Any ideas what deficiency this is? Maybe I'm not feeding enough in flower? I know it looks a little like nutrient burn, but P and K deficiencies look similar? Calcium deficencies also look a lot like this, but all the diagnostic pictures I look at are similar...
Week 5 flower, Northern Lights. In a few days, this will look a lot worse, I know. Been here, done this too many times !
For now, Ive raised the lights and powered down to 80% power. The problem started on middle fan leaf edges and is progressing to the tips, a brown rust color. Lower leaves show slight brown, and a few of the sugar leaves are starting to brown as well, mainly middle fan leafs though.
Can I ask? What do you mean by salt? Forgive my ignorance.
room temperature
Growth stage | Daytime temp. | Nighttime temp. | Humidity |
Seedling stage | 68-77 F°/20-25 C° | 59-68 F°/15-20 C° | 65-70% |
Vegetative stage | 71-83 F°/22-28 C° | 64-74 F°/18-23 C° | 40-70% |
Flowering stage | 68-79 F°/20-26 C° | 64-74 F°/18-23 C° | 35-45% |
Late flowering stage | 65-75 F°/18-24 C° | 60-65 F°/15-18 C° | 30-40% |
GH is a bugger for salts.Salts are everywhere, not just table salt. As an example, calcium is a salt. Epsom salts are used for Magnesium.(it even has salt in the name)...So, basically, as water dries out salts can buildup. Many water to runoff to prevent salt (nutrient) build up or flush the plants with plain water to correct issues. The main reason people "flush" is to remove salts.
Soluble salts are dissolved inorganic solutes. In growing media, common soluble salts are calcium, magnesium, sodium, chloride, sulfate and bicarbonate. Smaller quantities of potassium, ammonium, nitrate and carbonate are also found. Sources of soluble salts in soils and soilless media include commercial fertilizers, animal manures (usually high tunnels), soil organic matter, composts, runoff from areas where salt or ice-melt products have been used and irrigation water that is high in dissolved salts.
salts link
I'm trying to learn how to read my plants and am not convinced this is a cal deficiency. (still not sure though, the pics I look at seem very similar when it comes to Cal, P and/or K deficiencies.) I did give a good dose or Cal mag last watering though and am upping nutrients.agree he could use some cal mag. the amendments in coco loco are supposed to be aimed at cal mag though. there's more going on here.
general underfeed and it's showing the beginning of a pk ask, but i think the ph needs looked at by the bronzing in the leaves. everything is just slightly off and messing with the other parts.
also i'm not so impressed with the spyder farmer light. it's overpriced for what it is, it has a good chipset and decent driver, but it's only 100 true watt and the emitter count is pathetic. a better light would wake things up by piles. i'd run at least 2 for a single plant in flower.
also agree the temps could be better, but it's a moot point without addressing the light.
You need cal mag in your plain water first. Because it's coco.
Then add nutrients according to the schedule, I'd be around 1000 ppm right now.
They are starving.
And I'd drop the ph closer to 6.
5.8 in coco 6.3 in soil.
You have a combo.
Stay safe
Bill284
ph might be catching up to you. coco is generally fed on hydro rules at 5.8
Straight coco/ perlite will give you the best growth rate and total control.Ok, my PH tested a bit high around 6.7 last night. I was feeding around 5.8- 6.0 for a while but bumped the PH up to around 6.5 as I read that calcium is absorbed best 6.5- 7.0. I'll drop my feed back to 6.0 for a while.
Please note, this is Coco Loco, not pure Coco. Its supposed to be treated like soil, so I'm kind of in the middle of coco and soil. Its a weird hybrid. I actually moved to Coco Loco to improve aeration and reduce over watering, but it holds water like a sponge ! And yes, I added 25% perlite as well ! I'll move back to soil for my next grow.
Ok, my PH tested a bit high around 6.7 last night. I was feeding around 5.8- 6.0 for a while but bumped the PH up to around 6.5 as I read that calcium is absorbed best 6.5- 7.0. I'll drop my feed back to 6.0 for a while.
Please note, this is Coco Loco, not pure Coco. Its supposed to be treated like soil, so I'm kind of in the middle of coco and soil.
Its a weird hybrid. I actually moved to Coco Loco to improve aeration and reduce over watering, but it holds water like a sponge ! And yes, I added 25% perlite as well ! I'll move back to soil for my next grow.
Fox Farm is using several types of compost mixed with finely shredded Coco Coir and some Perlite. The Coco Coir is a replacement for the Peat Moss used in the more traditional potting soil mixes. Growers have talking about making these sorts of mixes for years as a way to avoid over-harvesting the remaining peat bogs. And as a way to use the piles and piles of discarded coco hulls found in areas that grow or produce coconuts instead of letting the stuff decompose which can take 5 to 20 years.
The company uses/mixes in dolomite lime and oyster shells to buffer the pH levels. When the mix is ready they ship it with a pH of 6.3 to 6.8 so basically it is all set to go as the traditional soil base mix it is.
Thinking about it, if the company mixed all those various composts with Peat Moss no one would be mentioning trying to treat is as a hydroponic growing medium and jumping through hoops trying to change the medium's pH levels. All of this and more is on the companies web page for Coco Loco. Any questions then call or eMail them for explantions. They are friendly and will pick up the phone if calling during normal business hours (California time) or respond quickly to eMail.
Is this plant being grown in a tent or some sort of closet or cabinet? If so it should be easy to bring the temperatures up to help the plant grow better.
Or is it in a room in the house like a bedroom or unused room? If it is in the corner of a room then the whole room has to be heated which takes a bit more planning and effort and a room at 82F can be uncomfortable even in the winter, especially if it is being used as a bedroom.
As mentioned, mix and feed at the recommended dose.
Classic signs of low Calcium. Shows up a lot on indoor grows with LED lights. Use the amounts recommended by the company making your Calcium supplement. The damage on the leaves is there and will not go away but once the plant finds the Calcium it needs there will be no new copper brown colored spots showing up and none showing on new leaves.
It seems to be affecting middle fan leaves ( the big leaves you see in Veg) and some of the smaller leaves at top around the colas. (not sure if these are sugar leaves) Bottom fan leafs seem to be hanging in there nice and healthy which is a bit odd. It started on the edges of the leafs and has progressed to the tips a bit...Do you mean the center fingers on the fan leaves. Fan leaves usually have 3, 5, 7 and sometimes 9 fingers growing off of a single stem. Seems to me that having the bronze or copper color start to show on the middle finger was pretty usual until I started using a Calcium product on a regular basis.
Thanks, the plant is doing pretty good other than the discoloration of middle leafs and small colas.Or do you mean the the problem is starting to show on the fan leaves that are more in the center or the plant. Some problems can start to show near the bottom of the plant, the middle or near the top. So, if the problem is starting in the middle area it could be an indication that something else might be happening at the same time.
It should not be hard to get your grow back on track. Have fun and enjoy your growing adventure.
I'm growing in a 15 " x 15" x 32 " grow cabinet, more power wont do me any good, its a very small space. I may look into better lights later but so far I've really liked the SF-1000 ( less than 100 bucks).. Many people have had very good results using this light. Not disagreeing with you, I may buy a new light later down the road. For now, I'll stick with the SF-1000
so i just noticed this. why is the space so small if you are banned to the basement ? how large is the bucket ?
i'm guessing you are hitting root binding a little as well.
Funny, I even have my cabinet covered in a blanket, its still too cool. If I reduce the intake fan speed, the temps go up but so does the humidity. So, I can reduce fan speed to get temps up to 75 but its still very cold lights out. (around 60-65)you could use more space, and even better lighting within your space. it doesn't make sense your temps aren't there if you are bottled into that cab. get a cheap environment monitor and shove it in there. they track temp and humidity.
i'd still look at better lighting. adding cheap rope light on the walls does amazing things in a space that size. look into space buckets and how they are run.
also in a space that size i'd run hempy style in a heartbeat. cheap, easy, no mess and a perfect micro style which is what you are doing.
Perhaps you can put a small fan above the lights pushing some heat downwardsHate doing this but I might have too. Its a little sad though, I'm only using 100 watts of light. Those heaters will throw my energy conservation attempts out the window...Those things take some seroius electricity !
I'll see if I can find a small heater with a thermostat... My lights out temps can dip into the low 60's. Thanks for the tip
Perhaps you can put a small fan above the lights pushing some heat downwards
Hydroponics and synthetic substrate sound complex and stressful. I thought we were supposed to be stress training plants not the plants stress training us.