All Discussions Tagged 'kh' - Aquaponic Gardening2024-03-29T11:56:19Zhttps://aquaponicgardening.ning.com/forum/topic/listForTag?tag=kh&feed=yes&xn_auth=noEggshells and pHtag:aquaponicgardening.ning.com,2014-07-31:4778851:Topic:5734282014-07-31T16:24:04.662ZAlex Veidelhttps://aquaponicgardening.ning.com/profile/AlexVeidel
<p>I don't know if this is the cause, but I recently added a small bag of dried, crushed eggshells to my aquaponic system, and now my pH <em>dropped </em>to 6.5. Same thing happened in my rain barrel when I added eggshells....</p>
<p>Now, eggshells are supposed to eventually raise my pH, right? Is there some kind of initial reaction that might cause my pH to lower at first?</p>
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<p>I mean, it could be totally unrelated, but it's the only thing I've done differently. Maybe my carbonate…</p>
<p>I don't know if this is the cause, but I recently added a small bag of dried, crushed eggshells to my aquaponic system, and now my pH <em>dropped </em>to 6.5. Same thing happened in my rain barrel when I added eggshells....</p>
<p>Now, eggshells are supposed to eventually raise my pH, right? Is there some kind of initial reaction that might cause my pH to lower at first?</p>
<p></p>
<p>I mean, it could be totally unrelated, but it's the only thing I've done differently. Maybe my carbonate buffer just ran low....</p> Just can't get the water buffered!tag:aquaponicgardening.ning.com,2014-05-12:4778851:Topic:5628172014-05-12T15:48:54.991ZConniehttps://aquaponicgardening.ning.com/profile/Connie
<p>Hi! I'm Connie and I haven't posted in quite awhile. Our system is an IBC, 220 gal with 2 grow beds, 20 half grown tilapia (born in our tank). We have been up and running one year through a hard winter in NC. We moved to a green house last fall and we now have squash, tomatoes, lettuce, peppers growing quite well except the squash and some of the lettuce have developed brown edges. (Heavy feeding plants leading to K+ deficiency?) Here is the water problem.... We have good water parameters…</p>
<p>Hi! I'm Connie and I haven't posted in quite awhile. Our system is an IBC, 220 gal with 2 grow beds, 20 half grown tilapia (born in our tank). We have been up and running one year through a hard winter in NC. We moved to a green house last fall and we now have squash, tomatoes, lettuce, peppers growing quite well except the squash and some of the lettuce have developed brown edges. (Heavy feeding plants leading to K+ deficiency?) Here is the water problem.... We have good water parameters except the pH varies daily from about 6.4 to 6.8 or 7 and we have to add potassium and calcium carbonate daily, sometimes twice. If we miss, the ph drops below 6.4. The kH stays around 2 or 3 and I cannot get it any higher without raising the pH to 8 or 8.2. Then lowering the pH also lowers the kh right back down to 2. We have tried both city and well water as our source. The well water has kH of about 2-3 and the city water is usually 2. PH runs about 7.2 in both. Gh in both sources is pretty high. Our son is a water treatment operator in another state and has tested the pH and kh of the well water b/c he didn't believe what we were getting with our API test. He said we were right...Any help would be appreciated! </p>
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