Derek T. S.
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  • Melbourne Beach, FL
  • United States
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High pH hard water. Need help lowering safely.

Started this discussion. Last reply by david Dec 25, 2014. 55 Replies

I need some advice on my aquaponics system.  I have a 900 gallon system w/tilapia fingerlings and lava rock in my growbeds.  The tilapia are doing great but my pH is really high.  I have hard water…Continue

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Elizabeth Arpino liked Derek T. S.'s discussion High pH hard water. Need help lowering safely.
Mar 31, 2015
david replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I'm just beginning in to experiment with AP, but here is my $0.02 Avoid HCl.  HCl is what you use to both lower pH and chlorinate your pool!   You are adding a toxic element to your aquaculture.  I have been using phosphoric acid…"
Dec 25, 2014
Carrie Lonsdale replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I know aquatic salt will help with the hardness of the water but you have a big system and people also use sea shells to help with the water that's something you might look into."
Dec 25, 2014
Jeremiah Robinson replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Wow.  8.2 is really high.  Do you test hardness? If it were me, I'd leave it for a while till the Ph comes down naturally to about 7, then buffer it there with lime, calcium carbonate, or a partial water change. If you try to adjust…"
Jun 6, 2014
Paul V Jensen replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Phosphoric is the way to go imo"
May 26, 2014
Ron Faulkner replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Rainwater is acidic so topping up with that will help to reduce the pH and/or keep it under control. I discovered that whilst cycling my system, I had to buffer the water after a heavy rainstorm to get the pH back up."
Aug 28, 2013
Daniel Demetriou replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I had a similar instance where this occurred to me during the early stages of my AP system cycling. I spoke with a local pet shop owner and he suggested I buy a large bag of peat as It would stabilize the the pH prevent the onset of algae bloom and…"
Aug 26, 2013
Larry E Hayes replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Duckweed is the answer. Too much lowers the ph, not enough can allow the ph to rise.  You can also add a small net bag of crushed oyster shells."
Aug 20, 2013
Srini replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I understand it now. Thanks a lot.."
Aug 11, 2013
Mark Massingill replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I hope this picture helps.  This is just the way I made mine out of parts I had on hand, there are other ways to make them.  The main thing is to have the air inlet positioned in such a way that water flows around it, creating a vacuum…"
Aug 11, 2013
Srini replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Mark I have a question on the Venturi Video. Can you please help me understand. Do you connect the white PVC end to the sump pump outlet and the grey  PVC tube is the inlet in to the tank?  "
Aug 11, 2013
Christopher Buckley replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"I don't grow using aquaponics although i really want start. So I don't know if it would affect the fish or not but CalMag+ by General Organics which is a line of organics by General Hydroponics is great for the plants and will drop your…"
Aug 5, 2013
Jason Fields replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Thanks Mark"
Aug 4, 2013
Mark Massingill replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Thanks Larry, I'm not exactly hip to the science behind it all, I just know what happens in a balanced system from experience.   Interesting stuff there and I learned a bit of the science reading it.  Like you, I adjust top up…"
Aug 4, 2013
Mark Massingill replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"If anything in any of my posts has been unwarranted or untoward, let me know.  As stated above, I simply wanted to let others know that the issues he encountered weren't always a problem, just as I stated that my solution may not work for…"
Aug 4, 2013
Jason Fields replied to Derek T. S.'s discussion High pH hard water. Need help lowering safely.
"Thanks Michael, Definitely want to keep a culture of encouragement around here, and we will do what it takes to keep it so.  Yall do what you can to make that happen.  Love having you all here. If it gets silly, lemme know."
Aug 4, 2013

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What topics are of most interest to you
Alternate Energy, Aquaponics, Projects around the world, Organic Growing
What topics can you potentially contribute valuable input and experience to at any level - novice to expert:
Aquaponics, Backyard Chickens

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