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Vlad Jovanovic's Discussions

Bad Batch of Plant !t Media (LECA)

Started this discussion. Last reply by Vlad Jovanovic on Wednesday. 13 Replies

Ok, so after using about 70, 45 liter bags of LECA (Lightweight Expanded Clay Aggregate) made by a few different companies, I've finally ran into bad batch.Since early spring of this year, we've used…Continue

Tags: Plant!t, pH, hydroton, LECA

Choosing an appropriate variety among cultivars

Started this discussion. Last reply by Jeffrey Ihara May 22, 2013. 13 Replies

I'm a big fan of brassicas. Especially the Japanese and Chinese types. Most all common economically significant (meaning grown as food crops) brassicas are pretty much known for being pretty reliable…Continue

Plant Growth and System Cycling

Started this discussion. Last reply by Vlad Jovanovic Feb 24, 2013. 8 Replies

These pictures are from a system that I am cycling. The water's pH is 8.2-8.5. The seedlings are less than two weeks old and have received nothing but system water. It's been cold and foggy here for…Continue

Tags: plants, cycling, seedlings, pH

GMO's may have led to increased pesticide/herbicide usage

Started this discussion. Last reply by Vlad Jovanovic Sep 26. 49 Replies

Found this article kind of interesting...…Continue

 

Vlad Jovanovic's Page

Latest Activity


Moderator
Vlad Jovanovic replied to Moe's discussion depth of IBC Grow Bed
"15 minutes on/45 minutes off, would likely 'do the trick' for you.(or increments of 15min). The "ideal" pumping sequence would be one that does not allow the grow bed to completely dry out (this will be dependent upon what media…"
14 hours ago

Moderator
Vlad Jovanovic replied to Moe's discussion depth of IBC Grow Bed
"Absolutely, positively no reason to cut them to 12". 20" would just give you MORE bio-filtration and mechanical filtration within the SAME foot print. If you will pardon the diatribe: Somewhere, at some point, a scientist (or grad student)…"
16 hours ago

Moderator
Vlad Jovanovic commented on Chi Ma's group Aquaponics For Beginners
"Also I cycled a pretty big-ish system (2,100 sq. ft) starting in mid Oct. and finished the process at the beginning of Dec. in temps much worse than yours Butch. And grew and sold veggies all winter.  Insulate EVERYTHING as per everyone's…"
yesterday

Moderator
Vlad Jovanovic commented on Chi Ma's group Aquaponics For Beginners
"No, no water changes. Ammonia begins to be somewhat inhibitory (quantifiably so) at about 6ppm...8ppm being the begining of the "no-go" zone...so your good. Your just being impatient  And once cycled, don't fret too much about…"
yesterday

Moderator
Vlad Jovanovic commented on Chi Ma's group Aquaponics For Beginners
"Heres some stuff on sizing tank heaters that may be useful to someone... http://207.150.195.88/pages/full_width/94/Heater-Sizing"
yesterday

Moderator
Vlad Jovanovic commented on Chi Ma's group Aquaponics For Beginners
"Yeah, welcome back Jim. Glad your ok, and were able to positively diagnose them Lyme disease to boot. @Butch, you can also conserve some of that 'water heat' by running you system in a constant flood scenario instead of flood and drain.…"
yesterday

Moderator
Vlad Jovanovic commented on Chi Ma's group Aquaponics For Beginners
"Butch, keep the ammonia between 2-4ppm while cycling. DO NOT keep adding ammonia daily "
Thursday

Moderator
Vlad Jovanovic replied to Vlad Jovanovic's discussion Bad Batch of Plant !t Media (LECA)
"The Hydrofarm rep's have thus far, been really cool, and honorable in dealing with the few small hiccups we've had with defective merchandise, or items damaged in transport. Much to their credit as a company, this time was no different.…"
Wednesday
Butch Pornebo replied to Vlad Jovanovic's discussion Pee-Ponics Flowering - Struvite in the group Fish-less Systems
"been watching some videos on compost tea and aquaponics. what do you think of brewing compost tea on a 5 gallon bucket then filtering it before adding a small amount, not sure how much per gallon of tank water ? good or bad idea ? or maybe just…"
Oct 12
Butch Pornebo replied to Vlad Jovanovic's discussion Pee-Ponics Flowering - Struvite in the group Fish-less Systems
"as always the valuable information you provide is highly appreciated."
Oct 11

Moderator
Vlad Jovanovic replied to Vlad Jovanovic's discussion Pee-Ponics Flowering - Struvite in the group Fish-less Systems
"As far as system pH for bacteria and plants...same old, same old...keep pH high wile cycling, then allow it to naturally slowly fall. I try to now keep both fishless, and fish stocked systems at a pH of around 6. In both scenarios, the systems will…"
Oct 11

Moderator
Vlad Jovanovic replied to Vlad Jovanovic's discussion Pee-Ponics Flowering - Struvite in the group Fish-less Systems
"It's not the fish that like the pH below 7, but rather the plants. So to answer your question...yes, if you want your plants to do really well, you will want to run the pH below 7. No, you do not need to run the pump 24/7. If you don't…"
Oct 11
Butch Pornebo replied to Vlad Jovanovic's discussion Pee-Ponics Flowering - Struvite in the group Fish-less Systems
"anyone :)"
Oct 11

Moderator
Vlad Jovanovic replied to Jeremiah Robinson's discussion How long till it clogs
"You may also want to consider adding to your list of factors 'plant cultivar'. If all other things were equal...there's a quite a difference in a grow bed that is consistently and exclusively planted with lettuce and spinach, as…"
Oct 11

Moderator
Vlad Jovanovic replied to Jeremiah Robinson's discussion High humidity cold weather spinach growing
"Yeah, it gets even a bit colder at times outside, so I built a gassifying stove (for about 50 bucks out of some old army barrels. I have lots of woods on my property, and a chainsaw and an axe...so it didn't really cost me much)...you have to…"
Oct 11

Moderator
Vlad Jovanovic replied to Jeremiah Robinson's discussion High humidity cold weather spinach growing
"Sometimes it's a struggle just to keep the air temperature above freezing...but it fluctuates with outside temps."
Oct 10

Profile Information

How did you find us?
Search engine (Google)
If you found us through a search engine, what search words were you using?
Aquaponics
Are you an aquaponic gardener already?
Yes
If so, what type of system? (pick all that apply)
flood and drain media, raft, combination
How old is your system?
2 yrs or more
What type of fish do you grow with? (select all that apply)
Other
How big is your fish tank?
4,850 litre
Name a part of a fish (spam blocking question)
Hepatic portal vein
Please tell us something else about yourself.
2131 sq.foot AP Greenhouse completed fall of 2011. Have 8 IBC media beds for growing as well as pre-filtering the DWC troughs. 4,850 litre fish tank, 2000+ litre sump buried in the ground. 546 sq. feet of DWC rafts. Using Carp as it is very tolerable to conditions here, and is also the single most bought/sold/eaten fish in these parts.

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Vlad Jovanovic's Blog

How To Get What You Want

Posted on November 25, 2012 at 6:47am 9 Comments

What do you want most in all the world? More money, a new car stereo, a vacation? To lose ten pounds, to get home from work in time to see your favorite sitcom? Or is it something more than that, something harder to define?

Maybe you've given up on ever realizing your true dreams, and you settle for smaller things because they, at least, seem possible. Maybe it never occured to you to ask yourself if the goals you've been pursuing really are what you want…

Continue

Food for Thought

Posted on September 22, 2012 at 5:18am 4 Comments

Here's an exercise to try at home. You will need a working stopwatch, or another timepiece that measures seconds. Before you begin, seat yourself in a comfortable chair and loosen your clothing.

Watch the second hand as it passes around the face of the clock. Picture the moment of your death, perhaps many decades in the future, or perhaps only a few years or months (who can know?). Wait for the second hand to reach the starting point at the top of the…

Continue

Time Well Spent

Posted on August 1, 2012 at 3:00am 4 Comments

Well it seems like I’ve been having the same/similar conversation here in the village with a lot of folks lately that goes something like this…

 

“Gee Vlad how did you know dot…dot…dot…”

 

“Well, I read it in a good book/study on the topic” (and if applicable, tried it out to see for myself).

 

“Ooh, I don’t have time to read”!

           

“Do you watch T.V”

 

“Yeah, who doesn’t”?

 

            “Well, if you…

Continue

Speeding Up Seed Germination

Posted on May 27, 2012 at 5:01am 9 Comments

Just because I said in some thread or another, that I would follow up on my results, here it is. The deal is...

I love hot peppers, but hate how long it takes for certain seeds to germinate (sometimes over 2 weeks). This often results in a lot of nail biting, and constant checking moisture levels, temps etc...So the thinking here was that many varieties of hot peppers evolved and proliferated mainly due to birds. Birds, not having taste buds that react to the capsaicinoids that…

Continue

Comment Wall (29 comments)

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Join Aquaponic Gardening

At 3:54am on January 12, 2014, Carey Ma said…

Hi Vlad, long time no talk. How and what are you doing these days? How is your operation going? I have had a pretty busy and exciting year building a new farm. One thing I'd like to share is my use of charcoal as media in my fishless system and in raised beds. What do you think about this, off the top of your head? I'm interested in your opinion.

Hope everything is well and you enjoyed a warm holiday season surrounded by friends and family.

Cheers

At 1:32pm on November 6, 2013,
Moderator
Alex Veidel
said…
Whoa, is that activity??? Welcome back Vlad!! Thanks, I hope to have a good time :)
At 1:19pm on September 23, 2013,
Moderator
Alex Veidel
said…

You know, there's an entire side of your face that I never knew existed....until this weekend O_o

At 5:09am on March 26, 2013, Ivan Djurickovic said…

Cao,

bolje vas nasao!

Ja sam totalni pocetnik u akvaponici, trenutno gradim svoj prvi sistem i ucim ucim ucim o svemu ovome :D

Pozdrav!

At 9:23am on February 24, 2013, Bob Campbell said…

This is a section of an essay I'm writing about soil.  The very last sentence describes how the pH is kept in check during the nitrification process. 

I'd like to
   1.  more accurately describe both the nitrification chemistry math of NH4+ conversion to NO2- and NO3-
as well as the
    2. denitrification math involving the hydrogen and oxygen from the NO2 and NO3- in which the N2 is returned to the atmosphere through denitrifying bacteria.

    3. It also seems that the plant exchange of H+ for nitrogen would help the soil retain a higher pH.  Can you help me verify that, and the correct symbol for the form of nitrogen being exchaged?

Maybe a new discussion would be best, but I wanted to specifically ask for your help so I posted my question here.







Bacteria come in two basic types.  Anaerobic which lives without oxygen and produces offensive odors, and aerobic which lives with oxygen and produces pleasant fresh odors.  Bacteria are responsible for recycling carbon, sulfur, and nitrogen.  CO2 is a by product of aerobic bacteria, and sulfur is recycled by anaerobic bacteria.  Nitrogen found in the atmosphere can not be used directly by plants. It must be 'fixed' through a process called nitrification where aerobic bacteria combine nitrogen with either oxygen or hydrogen
to form  nitrite (NO2-), and eventually nitrate (NO3-) ions from the ammonium (NH4+) waste of protozoa and nematodes which consume other bacteria and fungi.  Nitrification produces an acidic pH when oxidation occurs. This process is called reduction because there is a loss of electrons, and it releases energy that is used by the bacteria.   Nitrifying bacteria do not generally like low pH, but fortunately other bacteria called denitrifying bacteria convert nitrogen salts created by the nitrification process back into nitrogen N2 which returns to the atmosphere.
The plants exchange hydrogen (H+) for nitrogen (N?) which also helps to return the pH to a higher level.



At 3:00pm on January 30, 2013, Ilija Aralica said…

Hvala Vlado !

At 9:14am on January 26, 2013, Izzy said…

Hey buddy, thanks for the add!  Talk to you soon.  :-)

At 8:53am on December 7, 2012,
Moderator
Alex Veidel
said…

My tilapia are coming in a half hour. 10:30am Central Time. Yeah, I wasn't sure if the website actually hosted the videos like it does the pictures, or if it just linked to them, so I tried to upload straight from my computer. Anyway, it won't let me delete the video, at least, not that I can tell. Kinda embarrassing :) I'll load it up to youtube, its just the video version of my pictures.

At 11:41am on November 14, 2012, Tiffany Taylor said…

Lol well thanks for accepting the request!!!! Yes of course I can tell you anything you wanna know about our program. We have a website www.belovedcommunitychicago.org which is currently being updated so the new website will be www.thebelovedcommunitychicago.org. Our urban farm project went from a small summer project to a year round thing lol so we are trying to put up all of the info/pics of the work that the kids have done throughout the summer and fall. I can gladly email some photos of the urban farm if you'd like. The kids are really excited about the aquaponics system they are anxious to start lol.

 

At 4:01pm on August 21, 2012,
Moderator
Jon Parr
said…

Ha. CMH for camera. Deal.  I posted the pic here:

http://community.theaquaponicsource.com/group/californiaaquaponics/forum/topics/santa-cruz-area-ap-tour-august-18th-and-25th

Can you join us this weekend?

Yes, that was my first steelhead, on my first attempt at fly fishing on the Klamath river last year. Hope to return this year. I'm a fairly regular ocean fisherman, and I love to freedive and shoot big fricken fish, but lakes and streams are new territory. BTW, I'm going out for albacore next week, hope to spear a few. My buddy went out on Saturday and saw a school of 50 plus albacore just lounging under the boat.  Woohoo, can't wait.

 
 
 

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