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questions of first time DWC grower

should i use great white from the begining till the end in all reservoir changes? cause they sell great white (113gr) in amazon for 29$ but in my country its 73$=) and should i use recommended dosage? i will decide the size and buy he product according to these informations
 
yes - the benificial bacteria costs a little bit (150 grams was $50 for me, will definitely be looking at Amazon prices)

Every time I change/start the reservoir, I add the bacteria (right from the beginning)

I follow the dosage for Hydroponics (marked on the bottle) for me its 1/4 tsp per 4L (1 gallon)
 
How much should i wetten the rockwool cube? And should i close top of the rockwool cube completely or leave a hole and put seedling 1-2” inside it? Cause my rockwool is a bit bigger than my netpots and i will cut them a bit befpre i start
 
guys i havent decided yet that whether i will use rapid rooters or rockwool, so i have 2 questions to decide.

- i took 2 rapid rooters from mu friend but the package of them opened 2 months ago so rrs are all dry , can i use them and if i can how much should i wetten them?

-i got 2 rockwools which are bigger than my netpot and am going to cut them a bit and then shape them when i wetten them but i dont know that how much should i wetten the. and should i closetop of the rockwool when i put my seedlings in it or leave a hole?

should i put a little great white on the media that im going to use?
 
maner, I am using the 1 1/2 cubes and surround them with the Hydrotron pebbles. I pre soak the cubes in water pH adjusted to 5.5 for about a hour before placing the sprouted seeds into the hole in the cube. I, carefully, press the hole around the new root (with the seed case exposed). One could germinate the seeds directly in the cubes, but I prefer to use the paper towel method so that I do not have to guess whether or not the seed has sprouted. I use bag seed and , now, use hermied seeds and some times the seed will 'pop' a small root and stop. Using the towel method, I can see if the seedling is growing well before I place them into the cubes.
 
the great white, goes in the reservoir

Screenshot_20190120_152220.png

https://www.maximumyield.com/stonewool-dos-and-donts/2/1333



I let my rockwool sit until it stops dripping, then a little bit of a shake
 
OK guys i germinated and sprouted my seeds through rockwool and its been 6 days since i started top fed dwc system and im going to make a new thread after i change the reservoir for the first time after 1-2 hours. but i got a last question which i couldnt find even i turned the forum upside down. There is so much information about ph and all are nearly tells the same thing and there must be a topic of this ec/tds thing in more comprehensive way for hydroponic growers.

So my question is;
-what should be the ppm (NaCl) range of the reservoir solution after adding every nutrients in seedling, vegetative and flowering period?

(how can i understand that my plant is not in seedling period anymore?)
 
I think different strains take different amount of nutes. Some enjoying to be on 1500 some would burn to a crisp on that level.
I think many users will agree that nutes are not the most important things for a grow.
Im being a newbie, I always try to burn the end of the leafs, but no more. Hopefully that means I’m using the maximum food that the plant can take.
Personally me, I don’t follow any set schedule. Trying to see the plant and decide if she can take/need more or not.
Am I being stupid on that??? I definitely think that there is no set schedule for ppm leaves, that’s why you couldn’t find any proper articles about it.
 
hi Maner,

i've been looking for the same, but didnt find an answer.
so i've been keeping track in my own spreadsheet based on total water with nutes to add.
baseline water ppm ~ 300 (quite high, i know)
30L water + 10ml Micro + 10ml Gro + 10ml Bloom brings it up to around 500 (for seedlings).

Other topics on this:
https://forum.growweedeasy.com/forum/growing-community/245066-ppm-in-dwc
https://forum.growweedeasy.com/forum/growing-community/214939-everything-ec-related

and my (2nd version) spreadsheet: https://forum.growweedeasy.com/foru...ion-spreadsheet-for-nutrients-dwc-hydroponics

its not a seedling anymore when the first set of serrated leaves is developing after the cotyledons.
 
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thx for the information, today i past the first week and i mixed exactly same portions that you mentioned but i have a water purifier in my house and it produces base of 622ppm (NaCl) so i had to add some bottled water which has 80-115ppm to take ppm 425 level (7.68 pH) as base. now i just finished changing my reservoir with 702 ppm (6,06pH) with;
-20ml micro
-20ml gro
-20ml bloom
-5ml great white
-17,5ml ph down

i will check threads you sent now and make new thread for my grow, thanks
 
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