Backyard Aquaponics
A place to discuss aquaponics

Begin to sell my fishs.

I take out the fishs from ap system,then put them into a plastic barrel full of clean deep well water.After 3days without fish food,I found the colour of the fish become light.Why?

I found information about iron chelate online.
I found there are three kinds of them. Which are EDDHA, DTPA and EDTA. I found these are made by diffirent chelating agent.

EDDHA is very dark red.DTPA and EDTA are the same colour but with light colour.
EDDHA is most expensive but can be absorb easily by plants.
DTPA better price and better absorbency

EDTA common price and common absorbency

Because I am running a commercial ap system,I want to buy cheap iron chelate.Can I use EDTA? anyone have experience with EDTA?

I use the EDTA quite happily in my system, as do many on this forum.

It's supposed to be toxic to the fish, but I've never heard of anybody having issues with it.

Nice system. Question what are you using to seal your concrete troughs, and fish tanks.

Stone if your PH ranges above 7 FE EDTA is not the best choice as at PH 6.5 50% of the iron is unavailable.

Beautiful set up Stone.
I hope you have had luck with the whitefly problem. They are very damaging little pests. Hanging lengths of sticky yellow paper can catch them for removal or many organic gardening websites recommend vacuuming them from the leaves in early morning. This has worked for me to some extent, but I have nothing like 700sq.m to deal with.
Please keep us posted on your progress

Been a while since his last post Sept 2015 (15 months)........ nice time for a bump Nhibbo.
One of the threads I was watching at the time.

how you going Stone ? has it become profitable after 12 months.