Nathanael
  • Male
  • Phoenix, AZ
  • United States
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Nathanael's Discussions

DWC ... Floating Raft...

Started this discussion. Last reply by John Malone Apr 8, 2013. 48 Replies

DWC... has anyone been successful with it in a smaller backyard system and is it worth the go? This monday I will be finishing my 2nd 3'x6'x16" gravel growbed and I'm trying to decide if its worth…Continue

Tilapia of Choice/Best place to Purchase in Phoenix area

Started this discussion. Last reply by Kai Schumann Sep 4, 2012. 1 Reply

Hey Everyone, I'm brand new to this so not really sure where to post but I have a few questions. I just finished building my first system (a few start-up pics are on my prof. system has come a long…Continue

Tags: Fish, Tasting, Best, Arizona, Blue

 

Nathanael's Page

Latest Activity

John Malone replied to Nathanael's discussion DWC ... Floating Raft...
"After lurking around on this forum for a while and asking some questions, I've bitten the bullet and built a 4'x8' DWC trough and tables/rafts.  See the photos. What I really need to know now is, what media do I use in…"
Apr 8, 2013
Sheri Schmeckpeper replied to Nathanael's discussion Needing Wisdom and Insight for My Edible Backyard in the group Arizona Aquaponics
"We are lazy rafters...our water comes from the sump to the raft. The plants are growing faster than the muck accumulates, and we've put live breeders in the raft system to eat the muck. (credit to Dr. George). Sometimes they end up back down in…"
Mar 12, 2013

Moderator
Jon Parr replied to Nathanael's discussion DWC ... Floating Raft...
"Backer board is really weak, probably weaker than foam. Glen Martinez of Hawaii uses regular plywood sealed with Cabot stain. Plywood is cheaper, and much stronger, and in my opinion better. Cement will also raise pH with water contact, and the…"
Mar 6, 2013

Moderator
Vlad Jovanovic replied to Nathanael's discussion DWC ... Floating Raft...
"TC sells them. (The way I designed my system ratios I needed more flow and a bigger pump anyhow...so I went with the 'normal' low flow disk/stem assembly instead of the gravity modified version...let me try and find you her link... Here…"
Mar 5, 2013
Jim Fisk replied to Nathanael's discussion DWC ... Floating Raft...
"How big a system? and where should we look for such a valve or Google it? "
Mar 5, 2013
George replied to Nathanael's discussion DWC ... Floating Raft...
"Check out the indexing valve with modified stem.  I use a 60 watt pump and it works just fine. "
Mar 5, 2013
Jim Fisk replied to Nathanael's discussion DWC ... Floating Raft...
"Hey John, Outside of the weight issue they are pretty inert. You may want to inquire about any fungicides. I have a carbide hole saw that I use for tile flooring that should make easy work of all those holes. There is a fiberglass reinforcement that…"
Mar 5, 2013
John Malone replied to Nathanael's discussion DWC ... Floating Raft...
"Meanwhile, back at the DWC farm...   I'm moving further and further away from having anything floating on top of the water, but instead having the 'rafts' become 'tables' (for lack of a better term)  and set…"
Mar 4, 2013
Jim Fisk replied to Nathanael's discussion DWC ... Floating Raft...
"Hey I'm all about automation. Sorry I just couldn't resist I just picked up a Mitsubishi PLC for nutt'n and I am looking for a good program and a cheap indexing valve source or plan for making one. Not a priority but that nifty PLC is…"
Mar 3, 2013

Moderator
Vlad Jovanovic replied to Nathanael's discussion DWC ... Floating Raft...
"That's awesome Jim...all you need to do is figure out how to harness some of that, to power the new (likely stronger) pump you'll need for the index valve...Again, it's all about set and setting...and what the operator wants out of…"
Mar 3, 2013
Jim Fisk replied to Nathanael's discussion DWC ... Floating Raft...
"Hey Vlad, You convinced me to use timers and indexing valves but I got this strange looking cloud hanging over my grow beds when I went out to the GH after dark. Is this normal?? "
Mar 3, 2013

Moderator
Vlad Jovanovic replied to Nathanael's discussion DWC ... Floating Raft...
"Yeah, I too use an indexing valve with a quality repeat cycle timer to flood 8 media beds in sequence...siphons just seemed like they'd be a potential finicky nightmare and not worth the cost benefit (to me at least). "
Mar 3, 2013
George replied to Nathanael's discussion DWC ... Floating Raft...
"No kidding.  I use an indexing valve with timer to flood and drain 6 beds.   "
Mar 3, 2013

Moderator
Vlad Jovanovic replied to Nathanael's discussion DWC ... Floating Raft...
"It seems like the crux of the matter lies in things Jon already mentioned...Fish stocking density, quality fish feed (like Skretting USA/SilverCup), size/volume of the grow beds, worms, scuds (it has been written that worms can take care of about…"
Mar 2, 2013

Moderator
Jon Parr replied to Nathanael's discussion DWC ... Floating Raft...
"My opinion, and experience, says that you don't need any filtration between media and raft, IF the media beds are of sufficient size and design to accommodate the solids. A polisher between the two certainly doesn't hurt either, as long as…"
Mar 2, 2013
John Malone replied to Nathanael's discussion DWC ... Floating Raft...
"Hello Jim, There's a level of debate about whether there needs to be filtration after a grow bed before a DWC raft. From what I've read, I think it comes down maximizing efficiency and performance of the system. I'll probably start…"
Mar 2, 2013

Profile Information

How did you find us?
Search engine (Google)
If you found us through a search engine, what search words were you using?
how to build aquaponic grow beds out of wood with support for water hydraulic pressure
Are you an aquaponic gardener already?
Yes
If so, what type of system? (pick all that apply)
flood and drain media
How old is your system?
Less than 6 months
How big is your fish tank?
About 300gl
Please tell us something else about yourself.
I am super excited about aquaponics and am in the process of building my first system. I have just finished building aprox. 300gl in ground pond with fish/plant safe liner and have almost completed 2 3'x6'x16" grow beds out of 2x6 wood boards and same fish/plant safe pond liner.

My hope is too grow this system so that my family and I can be mostly, if not completely, veggie and fruit sufficient by 2014.

I Love Jesus, am an avide music lover, married with 2 beautiful daughters and am always open for input and ideas.

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Comment Wall (3 comments)

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At 1:25pm on September 4, 2012, Sheri Schmeckpeper said…

Welcome to the AZ group, Nathanael! It's a great group. I'm sure we'll be learning from you as much as you learn from us!

At 9:43pm on September 1, 2012, Larry said…

Guess you beat me to the request LOL should be home early AM Sunday. you can all me at 602-399-5252

At 8:48am on July 3, 2012, Sylvia Bernstein said…

 

Welcome Nathanael!

 

Thanks for joining the Aquaponic Gardening community!  I hope you find it a fun place to explore aquaponics.  There is a real blend of experienced and new aquapons in this community, so please don’t hesitate to get in there and start asking questions.  Everyone is quite happy to help out new members--no question is too basic. 

 

A great place to start is to read the “How to Use This Site” link on the upper right corner, “Start Here” section of the Home page.  You might also find the “Aquaponic Gardening Rules of Thumb” guidelines helpful.

 

Please add a profile image, participate and check in with us every day!  We are constantly posting news about aquaponics and the good food movement.

 

Thanks again for joining us, and I look forward to getting to know you.

 

Sylvia 

 
 
 

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