Please help me save my babies!! Underfed / Overfed / waterlogged. Coco LED Canna

[agito]

just to be clear thats 1.2 ec including your background and i hope your using coir nutes also try and get that ph a touch lower 5.8-6.0
the background ec will be calcium etc.. not npk tav use manure compost in your starting pots so this in not the same ball game when his media is inert

 

[Taviddude]

how can you say that when some hard water areas are 0.8 and a lot more hard water does not contain npk so a very light feed of 0.8+0.8 is 1.6 but only 0.8 of npk it does not sound right to me at all coir does not have that much more feed than rockwool so i dont really know what your basing this advice on

I'm basing it on the fact that NPK isn't the only thing in your water that can screw up your plant. A high background EC can cause problems with the flow of solids in the solution through the plants cell walls [osmosis] in too high a concentration whether the high ec is from nutes or existing minerals in the water. Simple science. Too much calcium (common in water) can stunt or kill your seedlings. The blanket approach of just subtracting your background EC is shaky. It may work for one person, and not another. General Hydroponics recommends you have your water mineral levels checked specifically for this reason if your background EC is over 0.3 or somewhere around there(I don't remember off the top of my head). NPK are not the only substances that can screw up your plant. General Hydroponics has only been in this field for 40 years. Some people subtract the total EC, some half it, some ignore it. There is no perfect blanket approach that will work for everyone.
Hopefully this clears up any confusion as to why I gave the advice I did.
Peace.
Tav.

 

[komach]

Thats why I chose for RO. My tap water ec is 0.6

 

[Taviddude]

just to be clear thats 1.2 ec including your background and i hope your using coir nutes also try and get that ph a touch lower 5.8-6.0
the background ec will be calcium etc.. not npk tav use manure compost in your starting pots so this in not the same ball game when his media is inert

Not sure what you're taling about. I've only finished one plant in a compost mix. Coco is my method of choice under hydro.
Not sure why you're so insistent on being right when there is really no right answer anyway. It's grower preference as to how you want to factor in your background EC...

 

[Taviddude]

Thats why I chose for RO. My tap water ec is 0.6

My well water fluctuates around 20 ppm. Will supply videos is anyone wants to call BS. It tests lower than the RO water I get from Walmart.
Nothing like clean Mountain water.

 

[komach]

I wish I had this pure water from Mountain. But instead I have crap water from big city. My RO water after 6 month+ is 12ppm now

 

[Groff]

Ok guys! Love the debate! keep it coming as all opinions are valid!

For arguments sake;

I know I under fed, for sure. The leafs started to yellow from the veins out. I gave them ONCE a 1.6 feed, 250ml per plant. The yellowing recovered quite well, but then the first set of leafs started to brown out (the next day and after)
How can it go from underfed to nute burn in 1 very small watering? I doesn't really make sense.
Please reason a little with me here... they were starving, gave them 1 strong feed. New growth is green/ old yellowing turns green again. No more feeding since, and the 1st set of leafs stat browning.
I am using LED, so less convection heat = less evaporation. Coco is hard to waterlog, but not impossible. Growth has stunted, so no H20 intake. I think I have managed to waterlog.

The only thing that has made sense to me is the pH value. I am absolutely certain I read Canna Coco Pro+ does not need flushing and buffering, and I did not do this. I have since read a couple of diaries where people had issues with this (other brands), the run-off coming out like "coffee" in color. As did mine, the little run-off I got (pH 6.0 6.2, while feeding 5.5-5.8). So it does seem logical that the coco buffer is excessively alkaline.

So a high pH value + water logging is what I believe is happening. Light are on in 5 minutes, so I will flush the coco out really well and prep a light feed.

 

[Kush T]

Yeah my aqua de tap is pretty good... EC .2/60-70ppm & a pH of 7

I'm liking it... The plants seem to like it too..

In reply to your above post Groff... Make it so..

& I'd also say that you could easily burn your plants with just one strong feed bro...

Just my

 

[agito]

Not sure what you're talking about. I've only finished one plant in a compost mix. Coco is my method of choice under hydro.
Not sure why you're so insistent on being right when there is really no right answer anyway. It's grower preference as to how you want to factor in your background EC...

I was seeing your point and thought we where having a grown up discussion with valid points here
I did not make any personal comments
Theres a reason why companies make hard water and coir specific nutes we can only work with what the op has
Don't go on about blanket comments when you come out with statements like this
"1.6 no matter what you background EC may be is WAY too high."
I was quoting your dwc grow with the coir manure mix and considering you think coir has enough nutrients for early life your way off target

 

[agito]

Yeah my aqua de tap is pretty good... EC .2/60-70ppm & a pH of 7

I'm liking it... The plants seem to like it too..

In reply to your above post Groff... Make it so..

& I'd also say that you could easily burn your plants with just one strong feed bro...

Just my

i agree here as well as theres no buffer id would also watch light distance as well also for arguments sake differing nutrients can be used at different strength i could not get over 1.2ec with canna but i could use 1.6 with growth tech before we discuss strain specific requirements

just flush it with a light feed