Notifications
Clear all

Runoff EC analysis

3 Posts
2 Users
42 Likes
1,699 Views
monkeydo
(@monkeydo)
Posts: 9080
Alpha-Pinene Admin VIP
Patreon Bling
Active Grow Diary Bling
5 Complete Grow Diaries
The High Council Award
Admin Bling
Discord Member
1 Plant of the Month Win
2 Plant of the Month Wins
3 Plant of the Month Wins
100k Likes Bling
7.5k Posts Bling
Member for 4 Years
Topic starter
 

I understand that if you analyze the EC of your runoff it can help to adjust the nutrient level to suit the plant. This is something I’m hoping will help me better understand what my plants needs are. My scenario is growing 2 plants with 2 separate automatic watering systems. I fertigate 5 times daily. In mid flower one plant,White Widow, is getting nutes at 1.4 ec and Northern Lights is getting 2.2 ec nutes. The runoff is 2.9 EC, seems high. I really apologize for the flashback to nightmares in maths class. What is this telling me, more water, ,more or less nutes, or something else. I know this is crazy deep but I’m interested. Is there a relationship between runoff EC and plant needs?

Random acts of kindness make the world a better place

 
Posted : January 6, 2020 1:54 am
twisted1, ScottishMac, Hart and 12 people reacted
Macky
(@macky)
Posts: 12279
Alpha-Pinene Admin
Patreon Bling
1 Complete Grow Diary Award
The High Council Award
Admin Bling
Discord Member
10k Posts Bling
100k Likes Bling
Member of the Year
Member for 4 Years
 

Fertigating five times a day usually means you can get away with a higher ec than  normal in coco. But thats still high. 

IF the feed going in is 2.2 but its coming out at 2.9, you need to lower the feed and flush the plants

you need to get some of the salts out of the medium, so flush it with water until the run off is coming out about 1.8, then re feed at that level (1.8)

The plant will maybe show signs of deficiency as it adjusts to the new level, and the ec will continue to rise for a few days in the run off, as the nuits will leach out into the medium. But after a few days the plants will be much happier at 1.8 than 2.2 Smile

 

Please keep up to date with forum rules and posting guidelines to keep the forum tidy 🙂
Forum Rules
Posting Guidelines
Community Standards
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

 
Posted : January 6, 2020 2:13 am
Zombie Nation, twisted1, ScottishMac and 12 people reacted
monkeydo
(@monkeydo)
Posts: 9080
Alpha-Pinene Admin VIP
Patreon Bling
Active Grow Diary Bling
5 Complete Grow Diaries
The High Council Award
Admin Bling
Discord Member
1 Plant of the Month Win
2 Plant of the Month Wins
3 Plant of the Month Wins
100k Likes Bling
7.5k Posts Bling
Member for 4 Years
Topic starter
 

@Macky  Got it. This is a question that I had a few weeks ago but got crazy busy at work and never got around to posting it. Plants lived through the condition and are currently on calcium fortified water at about .o2 ec for flush. I guess they really do want to live. It might have changed the yield for good or bad but maybe next time I’ll try to get it better. I noticed that during the stretch there was less runoff and near the end of flower there was a lot more runoff. Auto watering is really good but I do loose daily contact with my garden. Still learning Macky. More water at lower EC on future grows, can do. Thanks mate, much appreciated. 

Random acts of kindness make the world a better place

 
Posted : January 6, 2020 5:01 am
Zombie Nation, twisted1, ScottishMac and 9 people reacted

Our forum is free to join. We are an international cannabis forum that helps people all over the world grow their own personal supply of cannabis. Through our site you will find cannabis breeding forumscannabis deficiency forumsindoor cannabis growing forums, and much more. 

We are a home growers cannabis forum, and we only allow people who grow cannabis for personal use to be members. Our mission is to help you grow your own cannabis. We do not buy/sell/trade cannabis, or equipment for growing cannabis. Our site is strictly a cannabis smokers forum, cannabis growers forum and forum for medical cannabis users.

Use our guides on how to grow cannabis, cannabis grow diaries, and growers forum to find all the info you need to learn how to grow your own cannabis.

Any member who is suspected of growing cannabis for commercial gains will be banned immediately.

Please read our forum rules, and enjoy the site.

Find us on all social networks! Just search for Percys Grow Room