Add nutes if EC 4?
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lowerarchy
Active Member
4 seems pretty fuckin' high. That's like slightly less than sea water. I assume that since you didn't mention that
A. You are growing salt marsh grasses
B. Your plants, if cannabis, aren't crispy and dead
you mean .4 ec?
A. You are growing salt marsh grasses
B. Your plants, if cannabis, aren't crispy and dead
you mean .4 ec?
choempi
Well-Known Member
That is 3.9 and double the max at peak.
What system you using and what media and so on?
That is lethal ec...
maximum
Active Member
5 Gallon Buckets with an airstone. The plant sits in a netpot with clayballs. Roots dangle in the water with nutes. Plants are looking prety healthy to me. Should I drain and readd? Even when I just added 4 liters of water, the ec is still 3.9
choempi
Well-Known Member
Well, what is your ph, what kind of water, how old are the plants, how long have they been in this ec?
Unless that reading is faulty you will quickly have dead plants.
maximum
Active Member
PH says its between 5-6 on each plant. I got that in check. They are 5 weeks into flowering. I just got my hanna last week and since then I have not seen the EC go under 3900. Ill go get calibration fluid tomorrow.
But guys, if I remove all the water and just add fresh nutes then would I just add the same amount of nutes I would have on week 6 or would I need more in the water since the nutes from week 5 aint there no more?
But guys, if I remove all the water and just add fresh nutes then would I just add the same amount of nutes I would have on week 6 or would I need more in the water since the nutes from week 5 aint there no more?
Japanfreak
New Member
either your meter is broken or you are very confused, either way dump the rez and mix up a fresh batch
choempi
Well-Known Member
Wow, a bit confused. You are at 5 weeks flower, and this is the first time you have had a meter and this is the first time you have used?
You really need to post a current pic bro.
If you are that far into flower, I wonder what they look like?
And if you really want help, pics are it
choempi
Well-Known Member
I would like a pic of the plants and of the meter with reading, he may be very confused'
Do you nute to an ec and then balance the ph to no more than 5.8 before change?
Clown Baby
Well-Known Member
If you are reading your meter correctly, then it needs to be calibrated. Your plants would die at that EC.
Maybe you mean CF = 4.0?
CF of 4.0 = EC of 0.4
If your plants are alive, and your pH is 5 to 6, then your EC CANT be 4.0
Maybe you mean CF = 4.0?
CF of 4.0 = EC of 0.4
If your plants are alive, and your pH is 5 to 6, then your EC CANT be 4.0
choempi
Well-Known Member
tru dat...
Japanfreak
New Member
It almost sounds like he's been adding back full nutes without rez changes on a weekly basis by what he's saying, but I'm hoping that's not the case.
choempi
Well-Known Member
Bingo! You may be right
maximum
Active Member
I am on this nute schedule. Each week I add whats written below. I dont change the rez.
PER GALLON
Week 1 of 12/12 : 6ml Grow + 6mil Micro+10ml Bloom
Week 2 of 12/12: 3ml Grow + 7ml Miccro + 12ml Bloom
Week 3: 3ml Grow + 8ml Micro + 14ml Bloom
Week 4: 3ml Grow + 8ml Micro + 16ml Bloom
Week 5: 2..5 Grow + 7ml Micro + 18ml Bloom
Week 6: NO GROW + 6ml Micro + 20ml Bloom USE UNTIL FLUSH!
Flush 10-14 days before harvesting
Japanfreak
New Member
Those look like a weekly recipe where you are supposed to dump the rez and start fresh each week to me.
maximum
Active Member
Serious? Oh fuck. You think my hanna meter is needing calibration?
choempi
Well-Known Member
ahhh, we use meters to measure real time consumption at real time. When you change out you need to have a fress nuted batch that is phd to no more then5.8 max as it will creep along wth ec over 24hrs of feeding, the ph is the key, Then you can judge your growth rightly. can only gues that you have not done rhis.
EC and ph vary, need to get then close to optimum.
Post a bit info on the grow for better feedback bro...
You have to start fresh every week by that, no wonder your ec is so HIGH...
I run my phd nute water a week then test the ec and adjust it usually with clean phd water due to the fact that the ec will rise as water is used up.
Japanfreak
New Member
Depends on how fast you can take this all in...Read this first, it's something I wrote for new growers at another site.
Rez management
When we talk about rez management we are talking about when to add water to your rez, when to add more nutrients and when to dump it all out and start over again. Every day your water level will drop due to evaporation and the plants drinking it up. Everyday you should add the same amount of water, which has dropped so that you keep it at a constant volume. You should take notes on how much you add back every day. If your using a 50-liter rez and every day it drops 5 liters, then you must add 5 liters back. After 10 days you will reach 100% addback, meaning that you will have added the same amount of water, which you started with. Here are 3 strategies that you can use to manage your rez
A lot of growers don’t bother changing their rez during a grow. My advice is that a fresh rez is always better than one that’s been used and added back to over months, so I’d stick to dumping at the 100% addback.
Rez management
When we talk about rez management we are talking about when to add water to your rez, when to add more nutrients and when to dump it all out and start over again. Every day your water level will drop due to evaporation and the plants drinking it up. Everyday you should add the same amount of water, which has dropped so that you keep it at a constant volume. You should take notes on how much you add back every day. If your using a 50-liter rez and every day it drops 5 liters, then you must add 5 liters back. After 10 days you will reach 100% addback, meaning that you will have added the same amount of water, which you started with. Here are 3 strategies that you can use to manage your rez
- 1. Add plain water + dump at 100% addback; this is the easiest method and is a good place to start for beginners. You add back plain tap water and once you reach the amount you started with you drain your rez completely and mix a new fresh rez and start again. You repeat this till the end of your grow. The plus side is you don’t need to measure your ppms with a pen and it’s easy to remember. The downside is that your plants are not getting a full meal most of the time.
2. 33% nutes + 100% addback: This method you are going to be replacing the food as well as the water with your daily toppings. Some smart people figured out long ago that the amount of food that the plants eat everyday usually equals 33% of the amount needed for the volume of water which is missing. So if you are adding back 1 gallon of water, instead of mixing Lucas formula at full strength for that one gallon, you only add 33% for that one gallon you add 2.64ml of micro (8ml * .33 = 2.64ml) and 5.28ml of bloom into the gallon of water and add it to your rez. Everyday you do the math for the amount you add back and once you reach 100% addback you drain the rez and start from scratch again.
3. PPM readings + 100% addback: Very similar as above, but instead of trusting that your plants have eaten 33% of the nutrients of the dropped water volume you use your ppm pen and find out how much they have actually eaten. It’s best to top of your rez first and let it sit for a while to get an accurate reading. Lucas formula is 953ppms 0.5 so if your reading is 800 ppm than you should be adding back 16% (800/953=0.84 or 16% less than 100%) of the total volume amount. So if you have a 20 gallon rez that would work out to 20*8ml*.16=52.8ml of micro and twice that for bloom. If this confuses you stick with the first options. Once again you drain your rez at the 100% addback point and start fresh.
A lot of growers don’t bother changing their rez during a grow. My advice is that a fresh rez is always better than one that’s been used and added back to over months, so I’d stick to dumping at the 100% addback.
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