Aquaponic Gardening

A Community and Forum For Aquaponic Gardeners

Mark Hall
  • 67, Male
  • Utopia, TX
  • United States
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Mark Hall's Discussions

Growing Tilipia for 9 months

Started this discussion. Last reply by Jeff S Feb 22, 2014. 3 Replies

Can I grow Tilapia for just the warm months and then change to Goldfish for the cold months?Continue

Tanks with Windows Could Stress Fish

Started this discussion. Last reply by George Aug 26, 2013. 5 Replies

According to Murray Hallam, light causes stress in fish. They prefer partial shade. Does anyone think that viewing windows in fish tanks are going to make a significant negative impact on fish health?Continue

Waterproofing Concrete is Impossible!

Started this discussion. Last reply by Carlos A. Gorricho Feb 7, 2014. 19 Replies

Everyone I talk to tells me that there is no product on the market that can be applied to concrete as a non-toxic waterproofing agent.Can anyone shed some light on this? How do these folks like…Continue

River water vs. Rain Water for Start Up

Started this discussion. Last reply by Mark Hall Jul 16, 2013. 8 Replies

I'm a new member ....so greetings to all.Can I use river water to fill my system initially?  Have rainwater as an alternative, and high alkalinity well water,  but feel like either the river water…Continue

 

Mark Hall's Page

Latest Activity

Mark Hall left a comment for To Walking Tall
"Sorry to respond so slowly. I don't get on this blog too often. What's on your mind?"
Jun 22, 2014
Mark Hall commented on Jeremiah Robinson's blog post Growth Trials from Australia
"Way cool.....I can't wait to hear about it. The big phase change tubes very confusing to me."
Jun 15, 2014
Mark Hall commented on Jeremiah Robinson's blog post Growth Trials from Australia
"Thanks Jeremiah, Very thorough and fun to read. I'm trying to understand delta H as relates to Cooling. I'm building a large passive solar greenhouse and trying to use tons (literally) of thermal mass and outsulation to isolate the growing…"
Jun 15, 2014
Mark Hall replied to M Cosmo's discussion Cooling a Greenhouse - Aquaponics in the group Greenhouses
"I've been building mine with lots of thermal mass. Not dug into the ground, but thick walls and outsulation. I'm in the Hill Country near Bandera and Utopia."
Apr 6, 2014
Jeff S replied to Mark Hall's discussion Growing Tilipia for 9 months
"If you can grow your fry in an aquarium during the winter months then you can put them in a larger tank when weather permits for grow out. That should give you a full year. I'm contemplating putting about 300 2 month old fry in an IBC full of…"
Feb 22, 2014
Keith Rowan replied to Mark Hall's discussion Growing Tilipia for 9 months
"start with the fish a little bigger and they'll be plenty big enought to eat in 9 months that is, start with 3-4, even 5" fish instead of 1""
Feb 14, 2014
Mark Hall posted a discussion

Growing Tilipia for 9 months

Can I grow Tilapia for just the warm months and then change to Goldfish for the cold months?See More
Feb 13, 2014
Carlos A. Gorricho replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"The reason why concrete in itself is NOT water tight, is because once it's casted and the curing process starts, the chemical reaction between cement and water liberates heat, which in turn pushes air out of the mix; the tiny air bubbles…"
Feb 7, 2014
Jake Schneider replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"I have used rubberizit on my grow bed.  Last year when I took down my system, I fiberglassed the inside of my wood grow bed then used a paint roller to apply the rubber.  After letting it cure for 7 days, I replaced the gravel and…"
Feb 5, 2014
Kevin Gorham replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"I visited a commercial tilapia breeder who makes all his tanks from concrete, and does not seal them with anything. When the pH falls, it leaches the lime out of the concrete, buffering the pH. He has to resurface his tank every few years because of…"
Feb 5, 2014
Steve R replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"There are paint on 2 part liquid rubber liners that i have used on old farm ponds but i do not know if it is food grade."
Feb 4, 2014
Mark Hall replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"Thanks Bill...Great info....Sounds like the rubber is the ticket....all things considered."
Feb 4, 2014
Bill Swearingen replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"We used to use Thoroseal. The problem was it tends to brake down within acouple of years. Aquatic environments are very hard on this product. If you use any rubber product, be sure to acid wash your tank first with muratic acid. BE CAREFULL!! Ware…"
Feb 4, 2014
Mark Hall replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
Feb 4, 2014
Bill Swearingen replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"I am a contractor that specializes in high end koi ponds. I have used "Ruberize It" to seal concrete pond . It works! No voc. I have had good luck with a brush, and with a sprayer."
Feb 3, 2014
Stuart Polkinghorne replied to Mark Hall's discussion Waterproofing Concrete is Impossible!
"I have tried both wax and rubberizeit. Wax??? Rubberizeit great stuff.... We are in the planning stage of doing large cement tanks and grow beds.  We have one 900gal cement tank and a just finished 2000gal (still drying) Having a good smooth…"
Feb 3, 2014

Profile Information

How did you find us?
Aquaponic Gardening Book
Are you an aquaponic gardener already?
No
If so, what type of system? (pick all that apply)
flood and drain media, raft
How old is your system?
Less than 6 months
What type of fish do you grow with? (select all that apply)
Tilapia
How big is your fish tank?
300 gallons
Name a part of a fish (spam blocking question)
dorsal fin
Please tell us something else about yourself.
texas organic grower

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