Comment

Comment by Dr. George B. Brooks, Jr. on July 19, 2014 at 4:54pm

Greetings all.  Their environmental requirements are much the same as for tilapia but they are not at all cold tolerant. 70F is about the minimum. They don't like copper in the water and since their shells are made largely of an organic version of calcium bicarbonate, probably 6.8 is the lowest that you can go with the pH (need to research this one). Unlike tilapia they don't do as well in poor water quality including needing a reasonable amount of oxygen.

Regarding density, first I would disagree with those who suggest putting them in your IBC. They from my experience will not do well there. However as suggested by many, they do reasonably well in DWC grow beds. Because they are a low density product, you can't get all that many of them into your system at one time. I would suggest 1 prawn for every 2.5 square feet of DWC growbed space for now. Depending on how you manage your system you may be able to do better in time.

Comment by Stephanie Bader on July 19, 2014 at 3:42pm

What are the temperature requirements for them?

Comment by Matt Miskinnis on July 19, 2014 at 3:34pm

Dr Brooks, with the shrimp, is it more about the separation and hiding places?  I would love to try raising shrimp but I would think you would need a much larger tank because each shrimp would need so much space or they will attack each other.  Am I correct on that?

Comment by Jeff S on July 19, 2014 at 8:43am

Wow! What a concept. This will be interesting.

Comment by Dr. George B. Brooks, Jr. on July 19, 2014 at 8:40am

Trying something new today (7/16/2014). Using new ideas and new growing conditions let’s see how fast these things really grow (Macrobrachium rosenbergii). We will see them again on which ever comes first, October 16th 2014 or 70 degree F water. Tilapia is in 4th place but shrimp is the number one most consumed seafood in the United States. (http://bit.ly/1yuys68). The problem is that almost all the shrimp we consume comes from out of country sources. If this experiment works, maybe can start to change that.

P.S. Just for the record, this sustainable species can grow to more than 1 pound in size.

Comment by Jefferson Raebel on July 18, 2014 at 12:23pm

Megan and I are ready to put fish in our tank. The water chemistry is right and holly crap our plants are doing so good, we even have an egg plant that just popped out. We are excited and this has been a long time coming. Planning building and what not. We really would like to have a good first stock of good quality Tilapia. We have bread tanks and are looking forward to expanding the grow bed square footage soon. Right now we would like to get about 14 fingerlings to start. Our grow bed will support up to 7 full grown but we will be tripling that area soon.  Does anyone have a suggestion to were we should get our fish. We will in the far North Phoenix area.

Comment by Jeff S on July 16, 2014 at 6:54pm

On Friday Aaron talked about his Tilapia changing color and producing fry. I have 14- 5-6" Tilapia in an aquarium and I noticed one in the past changing color. Didn't know why. Now I have 3 that changed color and one is being very aggressive and not eating. She also likes to hang out in the corner with a piece of PVC. Who'd have thought at that size they'd be reproducing. Thanks Aaron. BTW I have about 800 in an IBC. There's no telling what they're up to.

Comment by Dr. George B. Brooks, Jr. on July 15, 2014 at 7:11am

Making progress. Last night's meeting of the Arizona Aquaculture Association 7/14/2014)

Comment by Stephanie Bader on July 14, 2014 at 1:59pm

@Bob each tower has a valve on it and i just adjusted each one to be only partially open till the water got to the end. 

Comment by Robert Rowe on July 14, 2014 at 1:47pm

2014-07-14 Hello every one. Its nice to see our group has grown so much while I have been sidelined with Bi-Lateral Knee replacements. 13 weeks and doing fine. I lost about 12 BIG Talapia but have in the past week discovered a school of 2" fry in my 700 gallon tank.

I found a possible new component for our systems; a wet filter cartridge, Rigid VF7000.  I will follow my progress on my blog.

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