Aquaponic Gardening2024-03-28T16:46:19ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954https://storage.ning.com/topology/rest/1.0/file/get/2796948435?profile=RESIZE_48X48&width=48&height=48&crop=1%3A1https://aquaponicgardening.ning.com/forum/topic/listForContributor?groupUrl=chemistry-math-and-aquaponics&user=0ctjv6upgasnr&feed=yes&xn_auth=noGrowth Hormon levelstag:aquaponicgardening.ning.com,2013-05-13:4778851:Topic:4750342013-05-13T10:48:15.828ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>I'm the past when I had fish I would change out the 1/4 of the water every other week to keep the growth hormone low so the fish would grow faster. Once the water is saturated with GH they stop growing. How does the chemistry in an AP system work with this? Does I still need to change out some of the water or do the grow beds dissipate the GH?</p>
<p>I'm the past when I had fish I would change out the 1/4 of the water every other week to keep the growth hormone low so the fish would grow faster. Once the water is saturated with GH they stop growing. How does the chemistry in an AP system work with this? Does I still need to change out some of the water or do the grow beds dissipate the GH?</p> Help with chemistrytag:aquaponicgardening.ning.com,2013-03-02:4778851:Topic:4435742013-03-02T23:34:33.565ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>I recently wrote <a href="http://chicogardens.blogspot.com/2013/02/soil-web.html">an article about soil</a> and how the nutrients cycle through micro organisms, and bugs. I was able to verify most of what I wrote, but the two paragraphs below contain a couple statements <em>shown in italic</em> that I went out on a limb with. I'd like your feedback as to the accuracy of what I am assuming.</p>
<p>In the first paragraph I'm assuming that when iron is converted in the anaerobic soil that…</p>
<p>I recently wrote <a href="http://chicogardens.blogspot.com/2013/02/soil-web.html">an article about soil</a> and how the nutrients cycle through micro organisms, and bugs. I was able to verify most of what I wrote, but the two paragraphs below contain a couple statements <em>shown in italic</em> that I went out on a limb with. I'd like your feedback as to the accuracy of what I am assuming.</p>
<p>In the first paragraph I'm assuming that when iron is converted in the anaerobic soil that it is converted to iron chelete and which is more soluble and easily washed away..</p>
<p>In the second paragraph I'd like to add some chemistry math to describe this sentence " <i><font color="#660000">The plants exchange hydrogen H+ for nitrogen which also helps to return the pH to a higher level.</font></i><span style="color: #990000;">"</span></p>
<p>I assume that when the plants exchange H+ for nitrogen the pH is affected. </p>
<p>Your help with this will be appreciated. </p>
<p>-Bob<br/> <br/> <br/> Minerals can influence the color of a well draining soil. Red and yellowish tints are an indication of iron, purple - black indicates manganese. Gray can indicate a lack of organic matter, and an anaerobic condition due to the microbes having converted the iron <i><font color="#660000">to a more available form called iron chelate Fe2 which is easily leached away.</font></i> Organic matter produces very strong coloring agents as it decomposes. Therefore gardeners are looking for dark soils the color of coffee.<br/> <br/> <span style="color: #990000;"><font color="#000000"><br/> Nitrification produces an acidic pH when oxidation occurs. This process is called reduction because there is a loss of electrons, and it releases energy that is used by the bacteria. </font><font color="#660000"><font color="#000000">Nitrifying bacteria do not generally like low pH, but fortunately other bacteria called denitrifying bacteria convert nitrogen salts created by the nitrification process back into nitrogen N2 which returns to the atmosphere. </font></font> <i><font color="#660000">The plants exchange hydrogen H+ for nitrogen which also helps to return the pH to a higher level.</font></i><span style="color: #990000;"><br/></span> <br/></span></p> HydroBuddytag:aquaponicgardening.ning.com,2013-01-05:4778851:Topic:4276012013-01-05T17:07:28.567ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>I have not spent time to learn how to set <a href="http://scienceinhydroponics.com/2011/01/the-first-free-hydroponic-nutrient-calculator-program-o.html" rel="nofollow" target="_blank">HydroBuddy</a> up and use it, but my initial impression is that it may be a good tool for adjusting nutrients. It's oriented toward hydroponics, but through the customization windows I believe it could be made to work with aquaponics and bioponics<em>.</em> Here's a link to…</p>
<p>I have not spent time to learn how to set <a rel="nofollow" href="http://scienceinhydroponics.com/2011/01/the-first-free-hydroponic-nutrient-calculator-program-o.html" target="_blank">HydroBuddy</a> up and use it, but my initial impression is that it may be a good tool for adjusting nutrients. It's oriented toward hydroponics, but through the customization windows I believe it could be made to work with aquaponics and bioponics<em>.</em> Here's a link to <a rel="nofollow" href="http://scienceinhydroponics.com/2011/01/the-first-free-hydroponic-nutrient-calculator-program-o.html" target="_blank">HydroBuddy</a>.</p>
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<p>Daniel Fernandez has made HydroBuddy a fully open source program.</p> urine powered generator from Africa; can it work chemically with something like struvite?tag:aquaponicgardening.ning.com,2012-11-12:4778851:Topic:4159282012-11-12T09:47:38.777ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>My organic chemistry knowledge is too slim and rusty to tell how or whether this urine powered generator from Africa might be able to be combined with aquaponics and/or struvite making, but I thought I'd start a thread here and see what people think. Seems like since the generator is running on hydrogen, the NPK etc. would still potentially be available as nutrient sources for plants if a system could be designed to combine the two ideas. What do people think?…</p>
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<p>My organic chemistry knowledge is too slim and rusty to tell how or whether this urine powered generator from Africa might be able to be combined with aquaponics and/or struvite making, but I thought I'd start a thread here and see what people think. Seems like since the generator is running on hydrogen, the NPK etc. would still potentially be available as nutrient sources for plants if a system could be designed to combine the two ideas. What do people think?</p>
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<p><a href="http://thenextweb.com/shareables/2012/11/07/forget-apps-and-other-useless-startups-these-four-african-girls-have-created-a-pee-powered-generator/">http://thenextweb.com/shareables/2012/11/07/forget-apps-and-other-useless-startups-these-four-african-girls-have-created-a-pee-powered-generator/</a></p> ORP and Media Bed Cleaningtag:aquaponicgardening.ning.com,2012-09-25:4778851:Topic:3952872012-09-25T00:48:15.978ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>One problem with media beds is that they need to be taken out of service to clean. If a person could identity bed zones that were trending toward becoming anaerobic and perform “targeted” cleaning, the bed could stay in service with minimal harm done to the biofilm.</p>
<p>One way to perform such trending is to profile the solids layer with an ORP probe on a monthly basis and record and chart the results in a spreadsheet.</p>
<p>The following illustration can be used as a guide for…</p>
<p>One problem with media beds is that they need to be taken out of service to clean. If a person could identity bed zones that were trending toward becoming anaerobic and perform “targeted” cleaning, the bed could stay in service with minimal harm done to the biofilm.</p>
<p>One way to perform such trending is to profile the solids layer with an ORP probe on a monthly basis and record and chart the results in a spreadsheet.</p>
<p>The following illustration can be used as a guide for interpreting the results.</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2656368718?profile=original" target="_self"><img src="http://storage.ning.com/topology/rest/1.0/file/get/2656368718?profile=original" width="454" class="align-full"/></a></p>
<p><span>schematic presentation of flooded soil from Y.Chen and Y Avnimelech</span><a href="http://microbewiki.kenyon.edu/index.php?title=Y.Chen_and_Y_Avnimelech&action=edit&redlink=1" class="new" title="Y.Chen and Y Avnimelech (page does not exist)"><br/></a></p>
<p></p> Are "aged" media beds soil-based?tag:aquaponicgardening.ning.com,2012-09-19:4778851:Topic:3934522012-09-19T16:30:10.046ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>Can the term, “soil-less” still be applied to an aged media grow bed where the humus layer becomes a significant source of plant nutrients? (This assumes the bed is used to capture and mineralize solids).</p>
<p>I personally believe there is a point in the life-cycle of a grow bed where the scale tips towards a soil-based system, especially when the decomposition of dead plant material, i.e. roots, is added to the mix.</p>
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<p>Can the term, “soil-less” still be applied to an aged media grow bed where the humus layer becomes a significant source of plant nutrients? (This assumes the bed is used to capture and mineralize solids).</p>
<p>I personally believe there is a point in the life-cycle of a grow bed where the scale tips towards a soil-based system, especially when the decomposition of dead plant material, i.e. roots, is added to the mix.</p>
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<p></p> Adding Magnesium to Humoniatag:aquaponicgardening.ning.com,2012-07-06:4778851:Topic:3593132012-07-06T13:48:37.579ZChris Carrhttps://aquaponicgardening.ning.com/profile/Chris954
<p>Eric, </p>
<p>Say one was to want to make struvite (<span> </span><span>NH</span><sub>4</sub><span>MgPO</span><sub>4</sub><span>·6H</span><sub>2</sub><span>O)</span> from humonia. If we start with the baseline premise that one litre of human urine contains 1.4 grams of phosphate salts, which should equate to 0.11 grams of pure phosphorous...</p>
<p>Could you show us how you'd go about figuring out how much magnesium to add to the humonia in order get the maximum amount of MgPO4 out of the…</p>
<p>Eric, </p>
<p>Say one was to want to make struvite (<span> </span><span>NH</span><sub>4</sub><span>MgPO</span><sub>4</sub><span>·6H</span><sub>2</sub><span>O)</span> from humonia. If we start with the baseline premise that one litre of human urine contains 1.4 grams of phosphate salts, which should equate to 0.11 grams of pure phosphorous...</p>
<p>Could you show us how you'd go about figuring out how much magnesium to add to the humonia in order get the maximum amount of MgPO4 out of the deal?</p>
<p>M:P molar ratio 1:1.1</p>
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<p>I'd like to have a sort of baseline numbers to work with before I start doing this, and see what pans out. As it stands, the plan is to add very small amounts of Mg and note when the precipitate stops forming, but was wondering if you could help offer something a bit more scientific.</p>
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<p>Thanks.</p>