Return to the Hydroponics Forum | Post a Follow-Up

 o
NPK 08-23-18 Nutritional Solution

Posted by azee_2009 (My Page) on
Tue, Apr 7, 09 at 4:53

Hello Everybody,
I need a guideline regarding the following:
I am new to hydroponics & have planned to seek some experience regarding
1: R-DWC Bucket System &
2: Plastic Bottle DWC system.
I have some Bitter Gourd & Round Gourd seedlings is hand with a DWC Pastic Bottle setup (air stones are attached with a single air pump) to each seperate Plastic Bottle & the seedlings were fed only with plain water until now.
Hydroponic supplies are not available in my area.
NPK 08-23-18 granule form is avaiable in our area. I want to mix it with water to form Nutritional Solution for my above said both seedlings to feed them in this hour of need.
What will be easiest way to treat with the same & what would be its consentration?
Awaiting assitance.
Prior thanks.
Azee.


Follow-Up Postings:

 o
RE: NPK 08-23-18 Nutritional Solution

If its a soil nutrient the N is likely to be in the form of urea, in hydro nutrients nitrate is the most common form of N. Some of the macro and micro nutrients may need chelating to make them available to the plants as the bacteria and microbes in the soil usually perform the task.
Flood and drain makes a more effective biofilter than dwc for converting the urea into nitrate although it may take a month or so to get the bacteria upto speed (google for info on the "nitrogen cycle").
You`d also need to add a chelating agent such as mollasses or citric acid.


 o
RE: NPK 08-23-18 Nutritional Solution

Freemangreens offers directions on his website on how to make a compost tea. That may be a better fit in your situation versus using the urea based fertilizer.


 o
RE: NPK 08-23-18 Nutritional Solution

I was reading the comment from hex2006 and thought I'd inject something about urea:

Urea-based nitrogen sources "require" soil-borne microbes to break the urea down into useable nitrogen. Since hydroponics uses no "soil" it's best to use a nitrogen source other than urea-based.

That being said, compost tea will grow most stuff. There's another link on my Web site which will take you to a fellow that custom-fabricates hydroponic nutrients. He designed the nutrient I currently use to grow strawberries and tomatoes and even though composted chicken manure tea works great, the nutrient he made for me surpasses the tea by a factor of at least 5! Give it a look-see.

Here is a link that might be useful: Home-brewed Nutrient


 o
RE: NPK 08-23-18 Nutritional Solution

The bacteria responsible for converting ammonia and nitrite into nitrate are found everywhere, all they need is surface area (a home),oxygen and a food source :)
The main issue with converting soil nutrients into hydro is the optimum ph levels and possibly temperature. Bacteria work best at higher ph and higher temps, they begin to die at about ph6 and work slower with lower temps.
If you use a ph that favours the bacteria you`ll get a nute lockout and probably root rot too:)
The better option is to brew or convert as a completely seperate process and then ph adjust the resulting liquid for hydro use.
It won`t need a lot of adjustment as the ph naturally falls during the conversion process. Mine seems to maintain a stable balance point of ph6.3 with a mature bacteria colony living in the system.


 o
RE: NPK 08-23-18 Nutritional Solution

Freemangrees:
from your new nute recipe it appears you're getting away from the organic blend. Interestingly, your custom blend is very similar to what I was using (and have since been spouting) last year. The only major difference is I was using calcium nitrate and epsom salts where you're using mag-cal.
The bag of hydroponic special has ingredients for both a general use formula and a tomato formula.
I believe I'll look at a formula incorporating the mag-cal that'll reduce my nitrogen levels and (hopefully) increase the calcium levels.
I'm still going to try and grow some peppers using the compost tea since it appears they like to have low nitrogen levels.


 o
RE: NPK 08-23-18 Nutritional Solution

grizzman:

If you use compost tea for peppers, keep a close eye on your EC. The tea tends to be a little on the strong side unless you purposely cut it with water.

My tap water contains calcium and is very hard (EC 1.2 right out of the faucet) so I resorted to cutting my nutrient with R/O water to achieve optimum levels for lettuce and peppers.


 o
RE: NPK 08-23-18 Nutritional Solution

When you say that hydroponic supplies are not available in your area, are you certain? Many people order them online and have them shipped to them, since many places just can't support a local hydroponic shop.

I know that if one opened up where I live it wouldn't get enough business to stay open for long, so I have to order all my specialty gear online, or try to build it myself.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Hydroponics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here