Moderating nitrites? - Aquaponic Gardening2024-03-29T12:31:01Zhttps://aquaponicgardening.ning.com/forum/topics/moderating-nitrites?commentId=4778851%3AComment%3A359397&feed=yes&xn_auth=noChandara, you could add a sol…tag:aquaponicgardening.ning.com,2012-07-26:4778851:Comment:3750662012-07-26T19:13:14.316ZStuart Polkinghornehttps://aquaponicgardening.ning.com/profile/StuartPolkinghorne
<p>Chandara, you could add a solids separator before you filter to reduce fish poo going into it. …</p>
<p></p>
<p>Chandara, you could add a solids separator before you filter to reduce fish poo going into it. </p>
<p><span class="rg_ctlv"><a href="http://www.google.com/imgres?hl=en&client=firefox-a&hs=F09&sa=X&rls=org.mozilla:en-US:official&biw=1152&bih=671&tbm=isch&prmd=imvnsfd&tbnid=K5TemlMupr8BnM:&imgrefurl=http://www.aquaponics.net.au/forum/showthread.php%3Ft%3D2866&docid=PN8342EAwz6oAM&imgurl=http://www.ecofilms.com.au/wp-content/uploads/2010/08/swirlfileter1-300x200.jpg&w=300&h=200&ei=_pURULHXMeHamAXm9YDQDQ&zoom=1&iact=hc&vpx=703&vpy=389&dur=540&hovh=155&hovw=225&tx=136&ty=129&sig=104771382279026269570&page=4&tbnh=147&tbnw=197&start=56&ndsp=20&ved=1t:429,r:3,s:56,i:267" class="rg_hl uh_hl" style="width: 225px; height: 155px;" id="rg_hl" name="rg_hl"><img src="https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcSlk4-dV4yKfmkw-o2iU6WE9bF9Ld_UWgk8jcK8aA3LPrsIbutT" style="width: 225px; height: 155px;" class="rg_hi uh_hi" id="rg_hi" alt="" height="160" width="240"/></a></span></p> Thanks TCLynx ! Here blue pip…tag:aquaponicgardening.ning.com,2012-07-07:4778851:Comment:3596102012-07-07T17:05:43.152ZChandara Khanhttps://aquaponicgardening.ning.com/profile/ChandaraKhan
<p>Thanks TCLynx ! Here blue pipes are cheaper than white pipes that's why they are the first choice. To me I prefer white pipes. <br/> <cite>TCLynx said:</cite></p>
<blockquote cite="http://aquaponicscommunity.com/forum/topics/moderating-nitrites?xg_source=activity#4778851Comment359397"><div><div class="xg_user_generated"><p>Chandara, I like the pretty blue pipes you guys have there.</p>
</div>
</div>
</blockquote>
<p>Thanks TCLynx ! Here blue pipes are cheaper than white pipes that's why they are the first choice. To me I prefer white pipes. <br/> <cite>TCLynx said:</cite></p>
<blockquote cite="http://aquaponicscommunity.com/forum/topics/moderating-nitrites?xg_source=activity#4778851Comment359397"><div><div class="xg_user_generated"><p>Chandara, I like the pretty blue pipes you guys have there.</p>
</div>
</div>
</blockquote> Chandara, I like the pretty b…tag:aquaponicgardening.ning.com,2012-07-07:4778851:Comment:3593972012-07-07T10:59:18.325ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>Chandara, I like the pretty blue pipes you guys have there.</p>
<p>Chandara, I like the pretty blue pipes you guys have there.</p> Because of de-nitrification N…tag:aquaponicgardening.ning.com,2012-07-07:4778851:Comment:3593852012-07-07T04:51:25.058ZChandara Khanhttps://aquaponicgardening.ning.com/profile/ChandaraKhan
<p>Because of de-nitrification Nitrite remains constant in my system while Nitrate is very low. My solution is: </p>
<p>1: Clean my filter medias that get clogged with excess amount of fish-poo (But not smell bad). Ensure that there is no anoxic condition in the filter systerms.</p>
<p>2. Add more air stones to Bio-fitlers (If you have them in your filtration) to improve the beneficial bacteria's performance. </p>
<p>Because of de-nitrification Nitrite remains constant in my system while Nitrate is very low. My solution is: </p>
<p>1: Clean my filter medias that get clogged with excess amount of fish-poo (But not smell bad). Ensure that there is no anoxic condition in the filter systerms.</p>
<p>2. Add more air stones to Bio-fitlers (If you have them in your filtration) to improve the beneficial bacteria's performance. </p> There is a process called de-…tag:aquaponicgardening.ning.com,2012-06-12:4778851:Comment:3494282012-06-12T20:04:50.713ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>There is a process called de-nitrification that uses anoxic conditions and can actually convert nitrates back into nitrite (after which you would want to have a degassing tank or some other means to really blow a heck of a lot of air through the water to allow the nitrogen to escape into the atmosphere rather than being in your system as elevated concentrations of nitrite, those same anoxice or anaerobic conditions can also cause other bad gasses in the water like hydrogen sulfide so in…</p>
<p>There is a process called de-nitrification that uses anoxic conditions and can actually convert nitrates back into nitrite (after which you would want to have a degassing tank or some other means to really blow a heck of a lot of air through the water to allow the nitrogen to escape into the atmosphere rather than being in your system as elevated concentrations of nitrite, those same anoxice or anaerobic conditions can also cause other bad gasses in the water like hydrogen sulfide so in aquaponics we usually try to avoid the anoxic or anaerobic places.)</p>
<p></p>
<p>Here is a link with some numbers to help those not on the metric system to figure out how much salt to use. Keep in mind that I'm in the USA so I use US gallons in my figuring.</p>
<p><a href="http://www.aquaponiclynx.com/salt-for-fish-health" target="_blank">http://www.aquaponiclynx.com/salt-for-fish-health</a></p> Sorry! No, our DO levels dro…tag:aquaponicgardening.ning.com,2012-06-12:4778851:Comment:3491762012-06-12T19:24:20.250ZMelissa Rasmussenhttps://aquaponicgardening.ning.com/profile/MelissaRasmussen
<p>Sorry! No, our DO levels dropped <strong>BY</strong> 1 ppm. They were at 7.7 two weeks ago, but since the tadpoles it's come down to 6.6. (Caveat - this is measured where the water returns to the pool, which is our current point of maximum aeration.)</p>
<p></p>
<p>I'll still scout around for anoxic areas - thanks for that tip, I didn't know those could cause excess nitrites!</p>
<p></p>
<p>And - salt, aye. </p>
<p></p>
<p>Thanks!</p>
<p>Sorry! No, our DO levels dropped <strong>BY</strong> 1 ppm. They were at 7.7 two weeks ago, but since the tadpoles it's come down to 6.6. (Caveat - this is measured where the water returns to the pool, which is our current point of maximum aeration.)</p>
<p></p>
<p>I'll still scout around for anoxic areas - thanks for that tip, I didn't know those could cause excess nitrites!</p>
<p></p>
<p>And - salt, aye. </p>
<p></p>
<p>Thanks!</p> You said your DO levels dropp…tag:aquaponicgardening.ning.com,2012-06-12:4778851:Comment:3493152012-06-12T15:29:24.252ZTCLynxhttps://aquaponicgardening.ning.com/profile/TCLynx
<p>You said your DO levels dropped to 1 ppm!!!!!</p>
<p>That is probably what is messing with things. The bacteria need dissolved oxygen to work so if something (like tadpoles or something else) has cause your biological oxygen demand to increase or something else has caused your aeration to loose efficiency, then that could well be the cause of water quality issues.</p>
<p></p>
<p>Use salt dissolved in the water to help mitigate nitrite toxicity and add as much extra aeration as you possibly…</p>
<p>You said your DO levels dropped to 1 ppm!!!!!</p>
<p>That is probably what is messing with things. The bacteria need dissolved oxygen to work so if something (like tadpoles or something else) has cause your biological oxygen demand to increase or something else has caused your aeration to loose efficiency, then that could well be the cause of water quality issues.</p>
<p></p>
<p>Use salt dissolved in the water to help mitigate nitrite toxicity and add as much extra aeration as you possibly can to help get the bacteria back up and running. Tilapia can handle quite a lot of salt (plain old solar salt for pools or water softeners is fine.) You need between 1-3 ppt of salt which will mean a lot of salt for a big raft system since you have to figure the entire water volume. However, if you will be doing water changes, wait till after the water change before adding salt and then hopefully don't do any more water changes or it will be nearly impossible to know how much salt you have in the system unless you have the tools to measure salt levels.</p>
<p></p>
<p>If you have any anaerobic or anoxic areas in your system that could account for high nitrites. Check your aerators and make sure everything is flowing properly. (make sure your pump intakes are not clogged with tadpoles and that the airstones are putting out the right amount of air.)</p>