Aquaponic Gardening

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Costa Rica Aquaponics - French, English or Spanish


Costa Rica Aquaponics - French, English or Spanish

Group dedicated to the specificity of setting up aquaponics system in Costa Rica. It goes without saying that everybody is welcome to add comments. Comments can be in French, English or Spanish.

Location: Costa Rica
Members: 43
Latest Activity: Nov 19, 2015

Discussion Forum

Pest Control

Started by Juan Carlos Narbon. Last reply by Wade Sample Sep 15, 2012. 4 Replies

 I am writing to you from neighboring Panama, where I started some months ago an AP garden with an attempt to grow tomatoes.  Since we have the same tropical weather, I would like to know if you have…Continue

tropical greenhouse construction

Started by timothy a sewell. Last reply by steve Apr 20, 2011. 1 Reply

I am a volunteer for a US nonprofit called Amigos for Christ and we are didicated to helping the poor in Necaragua.  I have built a concrete fish tank 4'x4'x60' in Chinandega, Nicaragua and I have a…Continue

What To Bring In Costa Rica If You Ever Want To Build An Aquaponics System

Started by Roger Pilon. Last reply by Roger Pilon Apr 1, 2011. 5 Replies

Here is the list - mainly complete but does not include every little things I can think of!water pumps air compressor (aquarium types)all testing combo/kit to check quality waterif building rafts…Continue

Comment Wall


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Comment by Roxana González on May 14, 2012 at 6:04pm

Hola Juan! lo que le cuento es que mi esposo ya fue y me llego con los seis sacos que necesitaba, a lo mejor se encontraron! en mi caso too late, que Dios nos acompañe! yo leí que si se usa con frecuencia y el señor Australiano lo recomienda. si sé que tenemos que darle una gran lavada a las piedritas por que vienen con mucho sedimento. Suerte! ya dimos un paso más! 

Comment by Juan Urbina on May 14, 2012 at 4:08pm

Jaja,Roxana!! Acabo de volver de ahí y me cotizaron lo mismo. Voy a hacer las pruebas de pH para ver si hay algún cambio y les aviso.

Comment by Roger Pilon on May 14, 2012 at 10:45am

Thanks for the tip Roxana!

Comment by Greg Pettengill on May 14, 2012 at 10:09am

As an offhand guess, Obsidian might be a good choice because it is rather chemically inert.  But one possible down side might be it's sharp edges.

Typically any "river rock" that is predominantly quarts works well.  How available is it in CR?

Comment by Roxana González on May 14, 2012 at 10:03am

I found a quarry ( Tajo Carhmi) located in San Pedro de Poas where they sell red lava rock the size of a coffee bean! specifically as a growing media for hydroponic systems.  A sac of 40 kilos costs 2.260 colones ($5)!!!. Or a square meter costs 16 400 colones ($32.4). Their phone numer is 24486848.

Comment by Roxana González on May 14, 2012 at 9:40am

Thanks Roger! I found out that our red lava rock is a kind of scoria. I read that it is been used in aquaponic systems.! So definitely we will use the red lava rock! As of yet I don t its price.

Comment by Farmer Brown on May 14, 2012 at 9:34am

Hi Roxana, in my opinion, you should still take a sample and test is effects on pH.  Just because it is used in hydroponics does not necesarilly mean it is a good fit for aquaponics.  In AP, the media is submerged much more than in hydroponics, and so any leaching effects are quite possibly amplified.  Take a bucket of water, and test the pH before and a few days after adding some sample.  My two cents.  FB


Comment by Roger Pilon on May 14, 2012 at 9:22am

I saw this thread about scoria (volcanic rock) here I sent an email to TCLynx, maybe there are some updates. The link mention in the thread seems dead for now!

Maybe some have updates too. It will be  a shame here in Costa Rica not being able to use scoria: there are tons of it all around!

Roger Pilon

Comment by Roxana González on May 14, 2012 at 8:53am

Yes Greg, it is pozzolana. So I feel very sad because I was planning to use hydroton, but it is very expensive here! then Iwas very happys knowing that pozzolana had been used in fish tank and hydroponics systems!. And now what will be the best growing media! cheap!

Comment by Greg Pettengill on May 13, 2012 at 11:35pm

Hola Roxana,

When I searched for "Puzolana" in Wikipedia I found Pozzolana.  Is this what you are refering to, or something else?  Apparently pozzolana has high alkalinity, which might interfere with maintaining the proper PH in an aquaponics system.


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