New publication " Improving Fish and Plant Health through Manipulation of Eh, pH and EC Interplay in Aquaponic Systems"

Hey friends, I wanted to share my recent publication. On what I believe to be some pretty revolutionary concepts to optimizing biological health in aquatic system.

Here’s a link if you’re interested. I would love to hear your thoughts!

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Thanks for pushing it forward. Adding to my read list.

Interesting, but the short link seems to be broken.

@romor001 Interesting it works for me. Here is the direct unshorted link for the download Form

Please let me know if it works for you!

This worked fine. Looks like buff.ly is down or not available from my region.
Thanks for the link!

Does the article have, or is it going to get a DOI?

From page 44 regardin pH changes for hygiene:

" … although it is important to not create
a rapid change exceeding (+/- 0.2 units pH/ day) of the culture
water to minimize animal stress or disrupt beneficial microbial
communities in the system."

This might be a good intention, but hard to realize in RAS systems. One practitioner we know even takes a totally different approach, generating a pronunouced pH step of at least one pH stage by adding hydrated CaOH for pH management. According to him this pH bump is tolerable for his catfish, but causes exoparasites like Gyrodactylus to release from the gills giving the opportunity to be swept away from the fish.

Regarding the microbial community on the biofilter I honestly think we are playing live evolution on the substrate surface anyway. This whole “pH optimum for nitrification bacteria is around pH 8” is of little substance to my opinion. If I keep the pH below that, those strains that tolerate lower pH will have an advantage and my system will select for them. Within certain boundaries of course. Can’t sweep with conditions that kill everything.

We see the same thing with multi resistant bacteria through constant evolutionary pressure and selection with antibiotics. Those that survive are going to be the generation of tomorrow.

I know, that is what you are describing in the article. And I agree.