Hi,
I've just put up blog post on pH and its effect on nutrient availability.....here!
Getting a good grip on pH and how it works is central to successful aquaponics. Dr James Rakocy refers to pH as the 'master variable" because of the way that it impacts so many other plant production parameters.
Gary
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer
www.microponics.net.au - for candid dialogue on integrated backyard food production.
www.urbanaquaponics.com.au - the home of the Online Urban Aquaponics Manual.
Another printout! Good info Gary. Thanks.
So a well stocked AP system running a low 6's will have a constant ammonia reading, but it's not toxic....interesting.
I am noticing that with my system at the moment, the pH has dropped right down to 6.2, and the shells are not bringing it back up, plant growth is marvellous, especially since I have been adding urea to get some nitrates. I dont have enough fish.
Fish Grown Out - 45 Rainbow Trout, 500 - 820g each.
Fish In Tank - 0 Black Bream, 800 Silver Perch, 150 Rainbow Trout.
My AP System
My AP Photos
If I grow a lemon tree can I continue to add the urea in the traditional way?
Yup
Fish Grown Out - 45 Rainbow Trout, 500 - 820g each.
Fish In Tank - 0 Black Bream, 800 Silver Perch, 150 Rainbow Trout.
My AP System
My AP Photos
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