Ppm rising after switching to bloom nutes...

shiva71

shiva71

Well-Known Member
Hiya
I have a single plant dwc. With Canna Vega a+b i was up to 900ppm which seemed like the sweet spot. Now ive switched over to Canna Flores, i continued mixing the rez at 900ppm only this time its rising, it was up to 1200 or so after mixing it at 900 a few days ago.
There is some sign of nute burn but nothing too terrible.
I guess I will reduce it but i was just wondering if anyone has noticed this before, ie varying ppm requirements from veg/bloom nutes...?
Cheers!
 
JSB99

JSB99

Well-Known Member
shiva71 said:
Hiya
I have a single plant dwc. With Canna Vega a+b i was up to 900ppm which seemed like the sweet spot. Now ive switched over to Canna Flores, i continued mixing the rez at 900ppm only this time its rising, it was up to 1200 or so after mixing it at 900 a few days ago.
There is some sign of nute burn but nothing too terrible.
I guess I will reduce it but i was just wondering if anyone has noticed this before, ie varying ppm requirements from veg/bloom nutes...?
Cheers!
Click to expand...
900ppm is pretty high for dwc. I've seen this happen (ppm rising unexpectedly) when over fertilizing. I max out at around 700ppm to 750ppm, and that's where a lot of hydro growers stop as well.

I would think about draining half your water, and filling up with plain, to get your PPMs down.
 
shiva71

shiva71

Well-Known Member
Ok thank you, I started another thread ona similar topic and got some good info there. Lots of people saying the plant need less nutes towards mid/end of flowering which is good to know.
I kept lowering it and it finally seems stable at 500ppm. I was mixing the Canna pk13/14 and bloom at their recommended doses and ive had issues following their feed schedule before.
Cheers!
 
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