polypropylene for "tray-ponics"-type "rafts" - Aquaponic Gardening2024-03-28T23:19:56Zhttps://aquaponicgardening.ning.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&commentId=4778851%3AComment%3A434001&groupId=4778851%3AGroup%3A28261&feed=yes&xn_auth=noThank you Vlad. Good to hear…tag:aquaponicgardening.ning.com,2014-11-14:4778851:Comment:5863632014-11-14T10:52:31.287ZJoni Solishttps://aquaponicgardening.ning.com/profile/JoniSolis
<p>Thank you Vlad. Good to hear this. Can you tell me where I can find more info about using a biofilter to treat this water before using it in a tray. <br></br> <br></br> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&commentId=4778851%3AComment%3A586293&xg_source=msg_com_gr_forum#4778851Comment586293"><div><div class="xg_user_generated"><p>Hi Joni...no…</p>
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<p>Thank you Vlad. Good to hear this. Can you tell me where I can find more info about using a biofilter to treat this water before using it in a tray. <br/> <br/> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&commentId=4778851%3AComment%3A586293&xg_source=msg_com_gr_forum#4778851Comment586293"><div><div class="xg_user_generated"><p>Hi Joni...no I'm not saying it wouldn't work, there would be a way(s) to do it...like by using the 'fish water' that has already gone through a biofilter, and using it in a 'stand alone' Kratky set up...but because of the biological oxygen demand (BOD) that the fish (and perhaps bacteria) place on a system, circulating your water would be important. </p>
<p>As long as the plant essential elements are in solution, it would work...hydroponic salts need no bacterial action for the salts to dissociate into there plant bio-available form. You could still use fish water or humonia water...it would just need to pass through a biofilter first (so that the nutrients would be present in solution).</p>
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</blockquote> Hi Joni...no I'm not saying i…tag:aquaponicgardening.ning.com,2014-11-14:4778851:Comment:5862932014-11-14T06:29:41.416ZVlad Jovanovichttps://aquaponicgardening.ning.com/profile/VladJovanovic
<p>Hi Joni...no I'm not saying it wouldn't work, there would be a way(s) to do it...like by using the 'fish water' that has already gone through a biofilter, and using it in a 'stand alone' Kratky set up...but because of the biological oxygen demand (BOD) that the fish (and perhaps bacteria) place on a system, circulating your water would be important. </p>
<p>As long as the plant essential elements are in solution, it would work...hydroponic salts need no bacterial action for the salts to…</p>
<p>Hi Joni...no I'm not saying it wouldn't work, there would be a way(s) to do it...like by using the 'fish water' that has already gone through a biofilter, and using it in a 'stand alone' Kratky set up...but because of the biological oxygen demand (BOD) that the fish (and perhaps bacteria) place on a system, circulating your water would be important. </p>
<p>As long as the plant essential elements are in solution, it would work...hydroponic salts need no bacterial action for the salts to dissociate into there plant bio-available form. You could still use fish water or humonia water...it would just need to pass through a biofilter first (so that the nutrients would be present in solution).</p> So Vlad, are you saying that…tag:aquaponicgardening.ning.com,2014-11-14:4778851:Comment:5862852014-11-14T01:42:50.732ZJoni Solishttps://aquaponicgardening.ning.com/profile/JoniSolis
<p>So Vlad, are you saying that the non-circulating rafts do not work with fish water? Sorry, I am super new to all of this and trying to under stand. If not fish water what fertilizer did you use in your raft trays? <br></br> <br></br> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&#4778851Comment434106"><div><div class="xg_user_generated"><p>Yes, it would be…</p>
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<p>So Vlad, are you saying that the non-circulating rafts do not work with fish water? Sorry, I am super new to all of this and trying to under stand. If not fish water what fertilizer did you use in your raft trays? <br/> <br/> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&#4778851Comment434106"><div><div class="xg_user_generated"><p>Yes, it would be tough to come up with a non-circulating AP design<img src="http://www.bkserv.net/images/Smile.gif"/> (I threw in the passive examples for Eric's sake, I figured he'd appreciate it). But really this method has worked for me both circulating, and non-recirculating, with extra air, and with no extra air...It works great.</p>
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<p><a href="//www.pinterest.com/pin/create/extension/"></a></p> Thank you so much for this p…tag:aquaponicgardening.ning.com,2014-01-04:4778851:Comment:5392972014-01-04T18:23:24.865ZMarlena Nelhttps://aquaponicgardening.ning.com/profile/MarlenaNel
<p><br></br> Thank you so much for this picture!!!! it is exactly the info I have been looking for without complicated language!!!! or acronyms I don't know yet.!!! hahah... Thank you</p>
<p><br></br> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&#4778851Comment433960"><div><div class="xg_user_generated"><p>Eric, what Paul is describing sounds more like an…</p>
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<p><br/> Thank you so much for this picture!!!! it is exactly the info I have been looking for without complicated language!!!! or acronyms I don't know yet.!!! hahah... Thank you</p>
<p><br/> <cite>Vlad Jovanovic said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&#4778851Comment433960"><div><div class="xg_user_generated"><p>Eric, what Paul is describing sounds more like an updated Gericke method, as described by Kratky,B.A., 1996, Non-Circulating Hydroponic Methods, DPL Hawaii, Hilo, HI.</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2772222142?profile=original" target="_self"><img src="http://storage.ning.com/topology/rest/1.0/file/get/2772222142?profile=original" width="720" class="align-full"/></a></p>
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<p>I've liked it before in other discussions, but here it is again... <a rel="nofollow" href="http://www.ctahr.hawaii.edu/hawaii/downloads/Three_Non-circulating_Hydroponic_Methods_for_Growing_lettuce.pdf" target="_blank">http://www.ctahr.hawaii.edu/hawaii/downloads/Three_Non-circulating_...</a></p>
<p>From a <em>nutrient</em> standpoint the PDF doesn't deal with AP or anything, but it's got some pretty cool hydroponic sub-system ideas in it nonetheless. And passive at that... I remember you had brought up the "passive hydro" topic to TC about a year ago, so you might dig the link Eric...</p>
<p>At any rate...It's nice to see those campaign signs actually fulfilling a useful purpose. Way to go Paul <img src="http://www.bkserv.net/images/Smile.gif"/> No staining, no warping, no glues/binders...nice.</p>
<p>You may want to protect them from the suns UV rays somehow (IDK, a sheet of something or another...tin foil...whatever), they'll probably last longer that way.</p>
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</blockquote> I also have purchased several…tag:aquaponicgardening.ning.com,2013-12-11:4778851:Comment:5355572013-12-11T15:57:01.139ZDave Lindstedthttps://aquaponicgardening.ning.com/profile/DaveLindstedt
<p>I also have purchased several of these tubs at a local Harbor Freight store. Cost with tax was about $7.00 each. I drilled drain holes in the bottom, have taken sludge from my grow troths mixed with compost and planting plants that do not lend well, such as carrots and other root vegtables, to my raft system. What is nice is they are small and portable and I can move them indoors if need be.</p>
<p>I also have purchased several of these tubs at a local Harbor Freight store. Cost with tax was about $7.00 each. I drilled drain holes in the bottom, have taken sludge from my grow troths mixed with compost and planting plants that do not lend well, such as carrots and other root vegtables, to my raft system. What is nice is they are small and portable and I can move them indoors if need be.</p> Hi.
I've just been reading th…tag:aquaponicgardening.ning.com,2013-08-24:4778851:Comment:5081552013-08-24T01:04:12.173ZSteve (from England)https://aquaponicgardening.ning.com/profile/Steve171
<p>Hi.</p>
<p>I've just been reading through this discussion, and have found it really interesting. I am still constructing my system, and was planning to use trays. I was unsure whether using trays in an aquaponic system was actually even a viable option, so I'm now pleased to find others already using them. My polytunnel should be around 10 feet tall, and I'm hoping to have the trays on shelving in two or three tiers. The trays I've purchased are 36" x 24" and come with lids. The plan is to…</p>
<p>Hi.</p>
<p>I've just been reading through this discussion, and have found it really interesting. I am still constructing my system, and was planning to use trays. I was unsure whether using trays in an aquaponic system was actually even a viable option, so I'm now pleased to find others already using them. My polytunnel should be around 10 feet tall, and I'm hoping to have the trays on shelving in two or three tiers. The trays I've purchased are 36" x 24" and come with lids. The plan is to use some trays with media and have them flood and drain. But the majority of trays will be used as raft, with holes in the lids to hold the pots,( with a gap between water and lid ).</p>
<p>I would really appreciate your advice, tips, experiences etc, to help me on my way or even avoid making a huge mistake.</p>
<p>Thanks.</p> Am now using a double layer o…tag:aquaponicgardening.ning.com,2013-05-19:4778851:Comment:4770502013-05-19T13:07:04.920ZPaul Trudeauhttps://aquaponicgardening.ning.com/profile/PaulTrudeau
<p>Am now using a double layer of corrugated polypropylene as I talked about doing in my last post: white on top of black. Seems to have entirely eliminated algae. Double thickness is of course stronger than a single layer, which is good. With a single layer, I was having to prop up the center of each 24" x 36" sheet ("raft", although it's not floating) with a vertical piece of 2" PVC about 7" long. Not necessary with the double layer. Sheet of black cost about 50% more than white, but…</p>
<p>Am now using a double layer of corrugated polypropylene as I talked about doing in my last post: white on top of black. Seems to have entirely eliminated algae. Double thickness is of course stronger than a single layer, which is good. With a single layer, I was having to prop up the center of each 24" x 36" sheet ("raft", although it's not floating) with a vertical piece of 2" PVC about 7" long. Not necessary with the double layer. Sheet of black cost about 50% more than white, but it's still pretty inexpensive. </p> two-month update on using cor…tag:aquaponicgardening.ning.com,2013-04-25:4778851:Comment:4672082013-04-25T04:28:46.165ZPaul Trudeauhttps://aquaponicgardening.ning.com/profile/PaulTrudeau
<p>two-month update on using corrugated polypropylene to suspend net pots over water trays:</p>
<p></p>
<p>--sealing the holes in the corrugated polypropylene with silicone didn't seem to stop a bit of algae from growing inside the sheet. My sealing job must not have been perfect. But it would be way too much work to do it perfectly.</p>
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<p>--white 4mm corrugated polypropylene is not completely opaque, and as such some sunlight reaches the water underneath, and I'm getting algae…</p>
<p>two-month update on using corrugated polypropylene to suspend net pots over water trays:</p>
<p></p>
<p>--sealing the holes in the corrugated polypropylene with silicone didn't seem to stop a bit of algae from growing inside the sheet. My sealing job must not have been perfect. But it would be way too much work to do it perfectly.</p>
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<p>--white 4mm corrugated polypropylene is not completely opaque, and as such some sunlight reaches the water underneath, and I'm getting algae growing in there. Considering backing the white with an underlayer of black.</p>
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<p>--the surface of the corrugated polypropylene cleans up very easily with plain water and a brush or rag. </p>
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<p>Haven't given up on this material for this application yet...</p> thread re connecting trays is…tag:aquaponicgardening.ning.com,2013-03-04:4778851:Comment:4447322013-03-04T18:20:14.791ZPaul Trudeauhttps://aquaponicgardening.ning.com/profile/PaulTrudeau
<p>thread re connecting trays is <a href="http://community.theaquaponicsource.com/group/raftdeepwaterculturegrowers/forum/topics/tray-ponics-raft-system-connecting-the-trays" target="_self">here</a>.<br></br> <br></br> <cite>Paul Trudeau said:…</cite></p>
<p>thread re connecting trays is <a href="http://community.theaquaponicsource.com/group/raftdeepwaterculturegrowers/forum/topics/tray-ponics-raft-system-connecting-the-trays" target="_self">here</a>.<br/> <br/> <cite>Paul Trudeau said:</cite></p>
<blockquote cite="http://community.theaquaponicsource.com/forum/topics/polypropylene-for-tray-ponics-type-rafts?groupUrl=raftdeepwaterculturegrowers&xg_source=activity&groupId=4778851%3AGroup%3A28261&id=4778851%3ATopic%3A433692&page=3#4778851Comment444296"><div><div class="xg_user_generated"><p>Hi Jim,</p>
<p>Thanks for the info.</p>
<p>Yes, I connected those trays with 2" PVC pipe. It was tricky. I will start another thread here regarding that, because it's starting to veer off the original topic.</p>
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<p>Paul</p>
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</blockquote> Hi Jim,
Thanks for the info.…tag:aquaponicgardening.ning.com,2013-03-04:4778851:Comment:4442962013-03-04T14:28:27.144ZPaul Trudeauhttps://aquaponicgardening.ning.com/profile/PaulTrudeau
<p>Hi Jim,</p>
<p>Thanks for the info.</p>
<p>Yes, I connected those trays with 2" PVC pipe. It was tricky. I will start another thread here regarding that, because it's starting to veer off the original topic.</p>
<p></p>
<p>Paul</p>
<p>Hi Jim,</p>
<p>Thanks for the info.</p>
<p>Yes, I connected those trays with 2" PVC pipe. It was tricky. I will start another thread here regarding that, because it's starting to veer off the original topic.</p>
<p></p>
<p>Paul</p>