6 big bud in RDWC DIY-new-

[tjo]

They are looking good to me. I am not a big fan of the blue PH up, but we need to keep our babies in the 5.6 - 5.9 range.

What PPM are they at now, and how do you refill the res as they drink? RO water only or more nute mix at xxx PPM?

Peace,

im trying to keep my EC at 1,8 stable.
my controller refill from one big res 140 litre which is out from
the grow room.i have float valve in my controler so the water is always in the proper level. the water is without ferts.-just ro water-
and i add nuts in the contoller every 3 days(NOW).



and my experiment with the shit led lights
10 more days veg and then i switch it for flower

 

[BigGreen]

Thats what happens in bloom you need to just keep adding a little bit of ph up every couple days to keep it in range. Try bringing it up to 6.0 or even 6.2 and it should buy you a couple more days with out having to adjust.
They look very nice but get that flush in now and they will love you for it.

 

[tjo]

Thats what happens in bloom you need to just keep adding a little bit of ph up every couple days to keep it in range. Try bringing it up to 6.0 or even 6.2 and it should buy you a couple more days with out having to adjust.
They look very nice but get that flush in now and they will love you for it.

biggreen

i will change the water today.
Q if a drain all the water from the sustem, the plants will
stay without water for a few minutes? ok?
how many minutes can handle my plants without water?
and
it is better to add and some tap water in my sustem?
i mean something about 1/4 tap and 3/4 RO or is bullshit??
thanks

 

[Kindman69]

Funny you guys talk about the blue ph up from gh, me and my buddy just talked about how the blue stuff seems to be rather week compared to Mad Farmers.
BTW, your plants will be fine without water for a view minutes

 

[highonmt]

TJO,

here is a table of relative nutrient availabilitys at a range of pHs. it graphically shows why certian ph ranges are critical in hydro. I was able to cure a slight Mg deficiency by simply lowering ph to 5.3-5.5 for a few days(notice the spike on the graph). I now have begun supplementing with epsom salt and run at 5.7-5.9. Each strain require slightly different amounts of nutrients so you've gained a lot of knowledge about this strain in dwc which you can use to reallly excell on the next run. I think you're doing very well for your first attempt. For flowering try to find a ph down that lists phosphoric acid as the main ingrediant. For veg a sulpheric acid containing ph down works fine.
cheers,
HM

 

[Hydrosun]

I found this chart in another thread several months ago. I deserves reposting ever so often.

Peace,

 

[highonmt]

I found this chart in another thread several months ago. I deserves reposting ever so often.

Peace,

The table you posted plus several others are on pH's site here's a link to the pH tables.http://www.angelfire.com/cantina/fourtwenty/articles/nutrientavailability.htm.

I think the table above is great at illustrating the proper ph for a res but it may be somewhat simplified. The nutrient availability tables I have seen in most cases are similar to the one I posted. I wonder if growers see more Mg and other deficiencies as a result of keeping the pH in too tight a range. Perhaps letting the ph range from 5.3-5.9 would be ideal?
Cheers
HM

 

[RandomGuy00001]

@Hydrosun: Thanks for posting that table! +rep.

 

[tjo]

i dont understand why all those tables are here.
thanks anyway.
....and the message is that 5,8 ph is the best?
or i should have my ph in a range?



highonmt
i dont use ph down.i onlu use ph up.
i have ph down from general hydroponics and ph down from
canna which is for flower. since then i have ro water no
ph down is nececery.

 

[Scrogerman]

Hey Tjo'
All you guys that use the ph up method i'd like a few q's anwserd if possible.
Why do you let you PH go down like that.? Surely this means one of two things.
1.) If PH goes down it can mean your nute mix is too strong/ or
2.)You have a bad bacterial issue.
So you see i dont get why you would want to use ph up at all, i have never used the stuff and if i need to raise my ph i just add PH unadjusted nute mix or add backs. If my PH were to go down ie 5.8 to 5.6 to 5.4 etc. then i would be pretty worried as it means one of the above. Knowing this why would you want your ph to go down this is not good hydroponic practice imvho' So could someone explain to me why you guys are running things this way???. Thanks!
'Peace.....&.....Be-Lucky'.............Scroger'

 

[highonmt]

TJO,

These tables help growers understand how to adjust pH to provide ideal growing conditions. If you look at blazeonups rdwc tutorial you'll see a set of ph ranges he's developed to optimize performance based on the stage of growth and genetic dominance (sativa or indica). Scrogerman, I agree something is odd here,the only times i've used ph up is when i've adjusted my res to a higher range eg from 5.3-5.5 up to 5.7-5.9 or I just screwed up and added too much down. What is the starting ph of your ro water tjo?

HM

 

[Scrogerman]

Highonmt
Just a bit of advise you never add ph up & ph down together or at the same time.
If the ph goes down there is a problem ime!
Peace......Scrog'

 

[highonmt]

Highonmt
Just a bit of advise you never add ph up & ph down together or at the same time.
If the ph goes down there is a problem ime!
Peace......Scrog'

Couldn't agree more. I just use a few drops on occasion when I pH to a lower point than intended or need to move the starting ph range toward the basic side. I'm using Flora nova grow and it really is well buffered. When I moved my range of pH's to the 5.3-5.5 for a few days I had to add a few drops of my home brewed pH up (KOH 1M) to bring the res back to 5.7 even after nuteing to 1300ppm.
Cheers,
HM

 

[tjo]

TJO,

These tables help growers understand how to adjust pH to provide ideal growing conditions. If you look at blazeonups rdwc tutorial you'll see a set of ph ranges he's developed to optimize performance based on the stage of growth and genetic dominance (sativa or indica). Scrogerman, I agree something is odd here,the only times i've used ph up is when i've adjusted my res to a higher range eg from 5.3-5.5 up to 5.7-5.9 or I just screwed up and added too much down. What is the starting ph of your ro water tjo?

HM

i have the tables in my files..
also i found my plants well with 5,2 ph even and 6.
ph seems to drop a bit and maybe is not good but since my
plants was healthy and the optimal ph for flower is 5,8
il try to keep it there.
edit..my ro water is 6,5ph
for the advices man

Highonmt
Just a bit of advise you never add ph up & ph down together or at the same time.
Peace......Scrog'

scrogerman has right.
this is a big mistake if anyone do this.the water will became
toxic for sure.

 

[Scrogerman]

Guys those of you who are letting there PH drop down ie 5.8 to 5.4, i wanted to know WHY you are doing this, as it aint good practice and seems you are missing a point somewhere, Unless of course you know something i do not?? the PH should either stay stable or go up but never down., if it goes down thats telling you your mix is too strong or you got bacterial issues?????!!!!!!!!
Peace........Scrog

 

[tjo]

scrogerman

i know what you talking about but i cant explain it.
english in not my language and if you notice im new in hydro.

ph drops when the solution is strong but my solution i dont think
is strong.maybe the fault is that i dident change the water about
6 weeks now..oups maybe is terrible mistake..one of this
days im change it.--im soooo boring last month--

29 days 12/12

 

[tjo]

and the rest

 

[highonmt]

Guys those of you who are letting there PH drop down ie 5.8 to 5.4, i wanted to know WHY you are doing this, as it aint good practice and seems you are missing a point somewhere, Unless of course you know something i do not?? the PH should either stay stable or go up but never down., if it goes down thats telling you your mix is too strong or you got bacterial issues?????!!!!!!!!
Peace........Scrog

Scrog is right as your plants use nutes the pH should go up or you've got a problem. My girls start the week at 5.6 1300ppm and end at 5.9 1000ppm. Nutrient solutions are acidic so they lower the pH. As I said I only use the up if I add a bit too much pH down. Also if you use a potassium hydroxide pH up and a phosphoric acid down and you mix them you get potassium phosphate and water. potassium phospate is highly soluble(150g/100g h20) and is a major component of many hydroponic nutrient solutions so adding small amounts of both at the same time will just raise the K and P slightly...no problem. My RDWC Bubba kush seems just fine....

 

[Scrogerman]

Next time try using unadjusted nute mix/add-back or straight tap water(dechlorinated) instead of ph up, No need to add more chemicals than nessesary unless of course its beneficial.
in my experience buddy it aint a good idea to add the both at the same time, but whatever works for you i suppose, mix this with that to give you potassium phosphate, mmm, is that how it mixes in soulution though, i dont know? if that was the case all the books and lit i have ever read are wrong then. Anyway Nice Bubba Dude MMmmm
Peace.......Scrog'

(Hydroponic basics-Never mix hydroponic PH UP & PH DOWN in the same solution? Mmm I wonder why?)

 

[Kindman69]

Nice grow Tjo, thought I come by and wish you some good luck as well!!!
Keep it green!
Kind