EC for flowering in Hydro/floodndrain in hydroton bucket system

baaael · Dec 24, 2018

First off merry christmas to all of you
Sorry in advance but i have been looking everywhere for some sort of ballpark figures for this,ive found alot on DWC and soil and coco but no to much on flood n drain
Im at start of week 2 with ec of 1.7 or 850ppm,plant looks indica,short and stocky and quite healthy.
I was vegging at 600ppm,hit flowing nutes at turn to 750 and then after 3 days made it 850,quick i know but i was worried about under feeding as i have never grown in hydro before,the plants seem to have handled it.
I was thinking of running up to max 1300/1400ppm but i saw a guy saying he was at 900ppm at week 5 in flood n drain and i saw another guy saying he goes to 1800ppm in DWC and another dude saying he doesnt go over 1300 in soilless or coco/perlite mix so i thought i better throw this up,
the research i have done is
Early flower 800/1000ppm
mid flower1200/1600ppm up untill week 6 where il back off week 7 to 600/800 and go 0 ppm mid week 8 till finsh at end of week 8,
I got told i dont need to flush for as long in F&D
Do indica,s use more nutes than sativas also
Thanks all

Airwalker16 · Dec 24, 2018

baaael said:
First off merry christmas to all of you
Sorry in advance but i have been looking everywhere for some sort of ballpark figures for this,ive found alot on DWC and soil and coco but no to much on flood n drain
Im at start of week 2 with ec of 1.7 or 850ppm,plant looks indica,short and stocky and quite healthy.
I was vegging at 600ppm,hit flowing nutes at turn to 750 and then after 3 days made it 850,quick i know but i was worried about under feeding as i have never grown in hydro before,the plants seem to have handled it.
I was thinking of running up to max 1300/1400ppm but i saw a guy saying he was at 900ppm at week 5 in flood n drain and i saw another guy saying he goes to 1800ppm in DWC and another dude saying he doesnt go over 1300 in soilless or coco/perlite mix so i thought i better throw this up,
the research i have done is
Early flower 800/1000ppm
mid flower1200/1600ppm up untill week 6 where il back off week 7 to 600/800 and go 0 ppm mid week 8 till finsh at end of week 8,
I got told i dont need to flush for as long in F&D
Do indica,s use more nutes than sativas also
Thanks all

Flood and drain is usually a bit higher because it's a soak rather than a dwc type situation where roots are constantly submerged where lower ppm is absolutely necessary.

baaael · Dec 25, 2018

Airwalker16 said:
Flood and drain is usually a bit higher because it's a soak rather than a dwc type situation where roots are constantly submerged where lower ppm is absolutely necessary.

so what u think man,im going to leave it at 900 on this next res change[so day 8],i was going to go up to 1200 up to week 6 and drop start the drop off at week 7,flush at mid 8weeks,how does that sound to u or is it to low,it seems like a good number to me but i really have no clue haha

baaael · Dec 25, 2018

Airwalker16 said:
Flood and drain is usually a bit higher because it's a soak rather than a dwc type situation where roots are constantly submerged where lower ppm is absolutely necessary.

il post some photos to in the next week,
also do i feed with more frequency as they get bigger/mature or do you back it off,
i was feeding once an hour lights on and once every 2 hours in dark over this last week and all through veg and theyre happy but last night i changed it to every flood the buckets every 50 mins and every hour and a half lights off or is this backwards?

Airwalker16 · Dec 25, 2018

baaael said:
il post some photos to in the next week,
also do i feed with more frequency as they get bigger/mature or do you back it off,
i was feeding once an hour lights on and once every 2 hours in dark over this last week and all through veg and theyre happy but last night i changed it to every flood the buckets every 50 mins and every hour and a half lights off or is this backwards?

No dark feeds at all. Pointless. Don't go above 1,000 ppm.

baaael · Dec 25, 2018

Airwalker16 said:
No dark feeds at all. Pointless. Don't go above 1,000 ppm.

really! i jumped to fast from the 600 veg i was at 8 days ago then i guess,ok thanks for your advice bro.
No dark feeds?wont my roots dry out 12 hours no water also i read on here a tread about how they dont stop feeding in the dark period and that they dont sleep,i forget what the thread was called but was an interesting read,the guy said they plant feeds/drinks the same amount if the room stays the same temps and to keep feeding as usual,
I guess theres alot of different views on this

baaael · Dec 25, 2018

Airwalker16 said:
No dark feeds at all. Pointless. Don't go above 1,000 ppm.

so should i go back to 700ppm EC 1.4 and start to go 1000
will that mess with them at all,they seem fine at 900ish now so your saying only 100ppm more through to end of crop or drop back

70's natureboy · Dec 25, 2018

Your meter is reading half of your ppm's (.5 scale), you have to double it to get actual ppm's.

Airwalker16 · Dec 25, 2018

baaael said:
so should i go back to 700ppm EC 1.4 and start to go 1000
will that mess with them at all,they seem fine at 900ish now so your saying only 100ppm more through to end of crop or drop back

taper down from here to week 5.5-6. Then flush just water no ph.

Major Blazer · Dec 26, 2018

I always say read your plants and monitor your reservoir because your mileage will vary depending on your specific plant (not just strain) and your environmental conditions, mostly lamp intensity and air conditions. The sweet spot of my last grow (flood/drain) was around 1.6 - I had tried running hotter later in flower but the plants weren't having it.

baaael · Dec 26, 2018

Major Blazer said:
I always say read your plants and monitor your reservoir because your mileage will vary depending on your specific plant (not just strain) and your environmental conditions, mostly lamp intensity and air conditions. The sweet spot of my last grow (flood/drain) was around 1.6 - I had tried running hotter later in flower but the plants weren't having it.

fark! i shouldve asked before i turned haha,
ok thanks guys,i guess il just do what airwalker said and taper down

Black Thumb · Dec 26, 2018

70's natureboy said:
Your meter is reading half of your ppm's (.5 scale), you have to double it to get actual ppm's.

wait what ?? can you elaborate on this ?

baaael · Dec 26, 2018

70's natureboy said:
Your meter is reading half of your ppm's (.5 scale), you have to double it to get actual ppm's.

i thought thats how most people read there ppms,why dont they just make it at full ppm readings instead of .5 and .7
i have a bluelabs trucheon one,which i thought was the go

baaael · Dec 26, 2018

Airwalker16 said:
taper down from here to week 5.5-6. Then flush just water no ph.

so flushing for 2 weeks in FnD?
i have final flush from grotek ,will that let me flush for not so long ,i was thinking just one week with that stuff,
does that change it at all or just keep it at 2 week to be safe

OldMedUser · Dec 26, 2018

I found a great spot to download FREE POT BOOKS. I downloaded a grow bible first and got lots more. Books look great and complete like the real ones I have here. No web site but just a page of links. Just right click on what you want and then "Save Link As" to download so they don't open first as some are 50+ megs. They got lots. Enjoy.

Major Blazer · Dec 26, 2018

baaael said:
so flushing for 2 weeks in FnD?
i have final flush from grotek ,will that let me flush for not so long ,i was thinking just one week with that stuff,
does that change it at all or just keep it at 2 week to be safe

Flush when your trichs look ready, not on week x,y,z.

I flushed for 7 days last grow. It depends on your medium. Rockwool was mine so it took a little longer. If you’re growing in hydroton for example, you won’t need to flush so long

baaael · Dec 26, 2018

OldMedUser said:
View attachment 4255232

I found a great spot to download FREE POT BOOKS. I downloaded a grow bible first and got lots more. Books look great and complete like the real ones I have here. No web site but just a page of links. Just right click on what you want and then "Save Link As" to download so they don't open first as some are 50+ megs. They got lots. Enjoy.

wow !!!! thanks so much man,great link

baaael · Dec 26, 2018

Major Blazer said:
Flush when your trichs look ready, not on week x,y,z.

I flushed for 7 days last grow. It depends on your medium. Rockwool was mine so it took a little longer. If you’re growing in hydroton for example, you won’t need to flush so long

yeah i saw a photo u posted of foliage,s post,very nice man.
ok i hear you,so its really up to the plant itself and the contributing factors like lights,room temps etc and any strain can take longer if needed

Black Thumb · Dec 26, 2018

baaael said:
i thought thats how most people read there ppms,why dont they just make it at full ppm readings instead of .5 and .7
i have a bluelabs trucheon one,which i thought was the go

I think what natureboy was implying is that an ec of 1.0 is 500ppms . Which if you are in the US and your using a US meter like a hanna or something it doesn't mean anything to you. I think if your using an EC meter then you would have to do the calculations. it was confusing

baaael · Dec 26, 2018

Black Thumb said:
I think what natureboy was implying is that an ec of 1.0 is 500ppms . Which if you are in the US and your using a US meter like a hanna or something it doesn't mean anything to you. I think if your using an EC meter then you would have to do the calculations. it was confusing

yeah on my one an EC of 1.0 is 500ppms but hes saying the ppms are 1000 because theyre halfed at the 500 or .5 thing so the EC is really 2.0?
the way i read it is that the ppm are half what the EC is so if sumone says i roll EC 1.6 like major blazer did earlier i take that as 800ppm,How is it 1600ppm at EC 1.6?,
my meter reads CF/EC/PPM at 5 and PPM at 7 or times 5 and 7 not sure ,i just read it off EC

EC for flowering in Hydro/floodndrain in hydroton bucket system

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