twentyeight.threefive
Well-Known Member
Why? Don't do that. Lol.
Cal-mag defficient?
- Thread starter Autofire
- Start date
Autofire
Well-Known Member
I am pretty sure this could be the issue
Autofire
Well-Known Member
it's been working pretty well for the grow I've got in flower now. Why not?
twentyeight.threefive
Well-Known Member
Where did you read about this process?
Autofire
Well-Known Member
not sure
lusidghost
Well-Known Member
I highly doubt dust is sucking up all of the available calcium of prebuffered coco and leaving this little plant starving.
Autofire
Well-Known Member
I think as the Coco breaks down which it would be when I'm mixing in perlite and potting up it exposed new sites for the cal-mag cation exchange.
But anyway I've given them a feed of 1ml per litre cal mag with 1 ml per litre a + b, EC 1.4 and I switched off the auto watering system to allow them to dry a bit and turned off the pot air pumps. I'll just keep a close eye on the newer growth for any discolouring over the next week.
Side question. Whats the maximum EC you guys run in heavy flower? The feed chart for these nutes suggests a crazy 2.2-2.4. I did have a strain a few grows ago that loved strong feeding but I'm running my flowering at 1.8 now and the girls are showing early signs of burn I think.
Bukvičák
Well-Known Member
How can the coco break down by mixing with perlite? Potting up as well? When it decays than it is exposing new sites, when you only handling with that, there are no new sites. Have you made the new coco same EC as your plant is “used to”?
Autofire
Well-Known Member
I thought maybe the agitating action would break some of the fibres. The bags come with quite a few lumps and I pull those apart by hand.
twentyeight.threefive
Well-Known Member
That's not how coco works. Cation exchange sites are part of the coco. They don't become exposed from breaking up coco or any other type of physical handling.
I'm running 1.2 EC in full flower right now. Highest I ran before was 1.8 and they didn't need even that.
budman111
Well-Known Member
Looks a bit lacking
lusidghost
Well-Known Member
One thing you should do next time is just sit the rockwool on top of the coco instead of burying it. That way it's impossible to overwater because the root ball is sitting above the saturation point. It will also cause the roots to start digging. Leave the pot empty enough to fill in around the cube once your roots are established.
Autofire
Well-Known Member
Thanks mate. I like that idea.
Rockwool holds a lot more water than Coco so maybe that's where the overwater is coming from
lusidghost
Well-Known Member
It does, but if you sit the cube on top of a medium it will wick out the excess water. It’s kind of amazing. Just make sure to keep the rockwool wet for a few days because it can dry out pretty fast.
At this early stage, I wouldn't even worry and wouldn't even try to correct anything as you may make things worse.
Just feed them half strength, correct pH and eventually they'll pick up.
My clones start off like this almost everytime with new coco etc. However after a certain size they just stay green.
In responses to
"Looks like it needs nitrogen " - They look green enough i wouldn't worry about this
"They look overwatered." - Can't tell looking at the photo, and could be the end of the day droop.
"I didn't think Coco could be overwatered " - Absolutely correct, I feed 6 times a day! fully saturated. Only time coco can be overfed is if the drain is slower than the feed and can't keep up thus flooding the coco. In a tomato coco greenhouse, they water up to every 20 minutes if the conditions are good ! Yes, every 20 minutes!
"Pre-buffered still must be rinsed." - Depending on the condition of the brand new coco, if the runoff ec is low, i wouldn't even bother rinsing it. Never ever have and have used 5 different brands in the past.
"Wait... You are pumping air into the coco? " - no need , quote from canna website of their coco which is pretty damn fine without chunks! "The water/air ratio is 73%/23%
Just feed them half strength, correct pH and eventually they'll pick up.
My clones start off like this almost everytime with new coco etc. However after a certain size they just stay green.
In responses to
"Looks like it needs nitrogen " - They look green enough i wouldn't worry about this
"They look overwatered." - Can't tell looking at the photo, and could be the end of the day droop.
"I didn't think Coco could be overwatered " - Absolutely correct, I feed 6 times a day! fully saturated. Only time coco can be overfed is if the drain is slower than the feed and can't keep up thus flooding the coco. In a tomato coco greenhouse, they water up to every 20 minutes if the conditions are good ! Yes, every 20 minutes!
"Pre-buffered still must be rinsed." - Depending on the condition of the brand new coco, if the runoff ec is low, i wouldn't even bother rinsing it. Never ever have and have used 5 different brands in the past.
"Wait... You are pumping air into the coco? " - no need , quote from canna website of their coco which is pretty damn fine without chunks! "The water/air ratio is 73%/23%
I’d definitely give it some cal-Mag and phosphorus should take care of the problem. Also, Epsom salt works great for magnesium. Good luck and happy farming
You’ve got shit loads of calcium and magnesium going in it seems, I don’t think it’s deficient but more likely getting to much.
Calcium deficient plants look different to mag deficient. If the lower plant is losing colour add very small amounts of mag, if you get spots of rusts it need more calcium.
I run a lower EC with plants full bloom, I’d add about 80% less cal mag and not at every feed.
Calcium deficient plants look different to mag deficient. If the lower plant is losing colour add very small amounts of mag, if you get spots of rusts it need more calcium.
I run a lower EC with plants full bloom, I’d add about 80% less cal mag and not at every feed.
