A group dedicated to raft growers. A place to share tips, tricks, and general info.
Website: http://coastviewaquaponics.com
Members: 378
Latest Activity: Dec 8, 2022
Started by Dr. George B. Brooks, Jr. Jul 2, 2017. 0 Replies 0 Likes
Just an FYI. Here is the link to the youtube vid: http://bit.ly/2sLEAgABelow is a still of the system.…Continue
Started by Courtney. Last reply by kimlee kingston Jan 4, 2015. 2 Replies 0 Likes
Hi everyone! I had some issues with setting up a grow bed's plumbing and it got me to thinking, in the interim, can I just set up a raft directly onto the fish tank? If it were any other kind of…Continue
Started by Paul Trudeau. Last reply by Joni Solis Nov 14, 2014. 37 Replies 6 Likes
Glenn Martinez has described a nice small raft system where he uses 24 inch x 36 inch x 8 inch-deep plastic masonry mixing tubs (trays) (available at Home Depot) as plant troughs. Instead of…Continue
Started by Michael Gough. Last reply by Michael Gough Aug 20, 2014. 3 Replies 1 Like
Aloha all,Just joined today. 2 years ago had taken a tour of Coastview Aquaponics operation. Going back to the big island IN 4 WEEKS to see what damage our Puna property sustained from the…Continue
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thanks much Kate..will be pumping up from fish pond to holding tanks,then gravity feed thru trays back to (with areation) the fish ponds. Because I'll be solar pumping what will happen if I reduce the flow at nitetime so I don't need to use battery power? Water needs to flow 24/7?
Like Giorgios idea re pontoons on the rafts rather than foam..Roots getting air should be a good thing -correct?
Rick, a good flow rate is 2 -3 gallons per minute. Pump sizing is going to depend significantly on how far you have to lift the water. Many pumps will have more flow and less lift than you need. One piece of free advice - if you're pumping up to your fish pond (as I do to my tank), arrange the outlet so the water sprays or fountains up and then falls - this aerates it.
Hi all..Am just getting started re AP. Want to do a raft system for lettuce/ greens. Have a good sized (thruflow) fish pond with over a hundred tilapia in it. Plan to solar pump the water up to holding tanks and then circulate it thru 24 growing trays which descend the hillside in a greenhouse situation. Looking at 4 rows of six trays- (12" deep,16" wide, 24" long). My question (among many others) is what would be a good flow rate for the water- or what size pump is needed for a system this size?
Chris, I am having a little trouble visualizing what you are proposing. Could you elaborate or post a diagram?
This may be off topic, but I am setting up a DWC system in a GH. My ideas are getting a huge pvc ditch drain, soldering the ends up with plastic, and doing it that way, whats the difference if i fill it with gravel or just letting water flow ? on one end i want to put three fittings above each other, so i can raise and lower the water level if needed.
Giorgio,
Thanks for sharing you're design. I was in Kauai not too long ago and toured the aquaponic center at the college there. The guy there, did something similar but he but the poxy on top of the styrofoam board and he said that it was healthier for the plants because of the air gap. I like your idea better I'm not a fan of styrofoam. I was going to buy the foam boards last week, glad I didn't.
I'm designing my raft bed at a 12" deep can I get by with a shallower bed?
My comment should have gone to disscusion, my bad.
Top of the day to you aquaponeurs. I have read many articles and have the aquaponics bible with Sylvia's contribution, I can not find what my tank water amonia level should be after cycling. My sytsom cycled a few weeks back, amonia and nitrites are almost non existing while my nitrates are high. I have read this is good sign, and that I need to add more grow bed vegetation. Sould I see signs of amonia after the pond cycled ?
Sorry for all the questions - love your innovations. The old saying is "Necessity is the mother of invention!"
So the improved oxygen level is in the water? Due to the air contacting a much greater surface area (no rafts blocking the air)? Or does it have something to do with the pots suspended above the water in the air? Any chance you have a DO meter?
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